diff --git a/test/input/100nodegraph b/test/input/100nodegraph
new file mode 100644
index 0000000..345b5c3
--- /dev/null
+++ b/test/input/100nodegraph
@@ -0,0 +1,296 @@
+digraph G{
+    size ="8.5,11";
+    96 -> 23 [label="3"];
+    96 -> 69 [label="6"];
+    38 -> 34 [label="3"];
+    38 -> 53 [label="959"];
+    86 -> 17 [label="452"];
+    86 -> 19 [label="135"];
+    86 -> 12 [label="8"];
+    86 -> 71 [label="4"];
+    54 -> 85 [label="1"];
+    54 -> 95 [label="6"];
+    54 -> 53 [label="596"];
+    10 -> 48 [label="1"];
+    10 -> 78 [label="1"];
+    67 -> 68 [label="4"];
+    67 -> 12 [label="10"];
+    67 -> 91 [label="214"];
+    85 -> 35 [label="144"];
+    85 -> 12 [label="880"];
+    85 -> 84 [label="9"];
+    85 -> 54 [label="10"];
+    85 -> 82 [label="184"];
+    16 -> 78 [label="279"];
+    16 -> 97 [label="667"];
+    16 -> 32 [label="10"];
+    16 -> 90 [label="10"];
+    16 -> 84 [label="431"];
+    8 -> 16 [label="910"];
+    8 -> 49 [label="3"];
+    8 -> 1 [label="5"];
+    83 -> 50 [label="1060"];
+    83 -> 53 [label="7"];
+    83 -> 79 [label="8"];
+    40 -> 56 [label="124"];
+    40 -> 89 [label="8"];
+    40 -> 21 [label="5"];
+    43 -> 15 [label="5"];
+    43 -> 28 [label="1"];
+    22 -> 45 [label="1014"];
+    22 -> 90 [label="3"];
+    22 -> 84 [label="3"];
+    62 -> 24 [label="922"];
+    62 -> 88 [label="8"];
+    62 -> 31 [label="7"];
+    62 -> 9 [label="104"];
+    78 -> 10 [label="7"];
+    78 -> 33 [label="7"];
+    80 -> 91 [label="6"];
+    80 -> 59 [label="5"];
+    55 -> 34 [label="6"];
+    55 -> 73 [label="7"];
+    94 -> 19 [label="6"];
+    94 -> 66 [label="2"];
+    94 -> 72 [label="831"];
+    94 -> 92 [label="1025"];
+    30 -> 44 [label="404"];
+    30 -> 50 [label="7"];
+    19 -> 25 [label="9"];
+    19 -> 94 [label="2"];
+    25 -> 97 [label="10"];
+    25 -> 19 [label="6"];
+    25 -> 83 [label="1033"];
+    24 -> 92 [label="1"];
+    24 -> 47 [label="10"];
+    88 -> 29 [label="1039"];
+    88 -> 72 [label="1"];
+    88 -> 62 [label="6"];
+    93 -> 3 [label="508"];
+    93 -> 25 [label="609"];
+    93 -> 16 [label="213"];
+    93 -> 63 [label="335"];
+    93 -> 41 [label="5"];
+    93 -> 5 [label="9"];
+    48 -> 58 [label="10"];
+    48 -> 10 [label="6"];
+    82 -> 56 [label="8"];
+    82 -> 9 [label="7"];
+    50 -> 22 [label="712"];
+    50 -> 29 [label="9"];
+    50 -> 30 [label="4"];
+    73 -> 55 [label="8"];
+    73 -> 75 [label="6"];
+    73 -> 83 [label="327"];
+    31 -> 68 [label="199"];
+    31 -> 62 [label="2"];
+    31 -> 36 [label="10"];
+    74 -> 72 [label="128"];
+    74 -> 64 [label="10"];
+    74 -> 92 [label="4"];
+    74 -> 53 [label="159"];
+    21 -> 40 [label="4"];
+    21 -> 45 [label="6"];
+    4 -> 61 [label="4"];
+    4 -> 100 [label="10"];
+    57 -> 77 [label="5"];
+    57 -> 61 [label="5"];
+    57 -> 16 [label="783"];
+    57 -> 53 [label="342"];
+    5 -> 32 [label="797"];
+    5 -> 93 [label="8"];
+    5 -> 29 [label="4"];
+    84 -> 23 [label="577"];
+    84 -> 22 [label="1"];
+    84 -> 85 [label="4"];
+    35 -> 79 [label="4"];
+    35 -> 11 [label="1"];
+    17 -> 96 [label="486"];
+    17 -> 33 [label="8"];
+    17 -> 37 [label="7"];
+    2 -> 15 [label="168"];
+    2 -> 18 [label="2"];
+    2 -> 52 [label="615"];
+    2 -> 72 [label="10"];
+    7 -> 69 [label="3"];
+    7 -> 60 [label="3"];
+    7 -> 16 [label="485"];
+    1 -> 72 [label="804"];
+    1 -> 42 [label="116"];
+    1 -> 8 [label="6"];
+    1 -> 18 [label="7"];
+    89 -> 59 [label="5"];
+    89 -> 40 [label="3"];
+    26 -> 46 [label="5"];
+    26 -> 87 [label="2"];
+    26 -> 73 [label="1062"];
+    45 -> 21 [label="7"];
+    45 -> 32 [label="9"];
+    45 -> 33 [label="781"];
+    27 -> 2 [label="870"];
+    27 -> 24 [label="549"];
+    27 -> 71 [label="2"];
+    27 -> 56 [label="1"];
+    59 -> 80 [label="8"];
+    59 -> 89 [label="6"];
+    63 -> 28 [label="2"];
+    63 -> 65 [label="1"];
+    41 -> 30 [label="514"];
+    41 -> 51 [label="5"];
+    41 -> 93 [label="8"];
+    39 -> 70 [label="4"];
+    39 -> 46 [label="3"];
+    47 -> 24 [label="5"];
+    47 -> 49 [label="2"];
+    9 -> 82 [label="6"];
+    9 -> 51 [label="5"];
+    46 -> 39 [label="3"];
+    46 -> 26 [label="9"];
+    46 -> 74 [label="221"];
+    20 -> 52 [label="2"];
+    20 -> 91 [label="5"];
+    79 -> 83 [label="2"];
+    79 -> 35 [label="5"];
+    79 -> 52 [label="451"];
+    49 -> 45 [label="901"];
+    49 -> 47 [label="6"];
+    49 -> 8 [label="9"];
+    70 -> 75 [label="4"];
+    70 -> 39 [label="2"];
+    70 -> 61 [label="722"];
+    33 -> 78 [label="7"];
+    33 -> 17 [label="4"];
+    33 -> 4 [label="257"];
+    81 -> 13 [label="5"];
+    81 -> 3 [label="6"];
+    32 -> 45 [label="5"];
+    32 -> 16 [label="2"];
+    36 -> 31 [label="9"];
+    36 -> 13 [label="1"];
+    34 -> 38 [label="3"];
+    34 -> 55 [label="7"];
+    34 -> 32 [label="534"];
+    34 -> 19 [label="664"];
+    3 -> 81 [label="5"];
+    3 -> 68 [label="8"];
+    14 -> 66 [label="10"];
+    14 -> 76 [label="8"];
+    14 -> 30 [label="363"];
+    14 -> 99 [label="1058"];
+    91 -> 20 [label="1"];
+    91 -> 80 [label="1"];
+    52 -> 76 [label="6"];
+    52 -> 20 [label="6"];
+    52 -> 4 [label="664"];
+    60 -> 7 [label="5"];
+    60 -> 42 [label="6"];
+    60 -> 27 [label="200"];
+    60 -> 12 [label="849"];
+    60 -> 6 [label="497"];
+    44 -> 37 [label="3"];
+    44 -> 64 [label="8"];
+    51 -> 22 [label="128"];
+    51 -> 34 [label="544"];
+    51 -> 9 [label="4"];
+    51 -> 41 [label="4"];
+    58 -> 50 [label="273"];
+    58 -> 11 [label="10"];
+    58 -> 48 [label="9"];
+    13 -> 36 [label="1"];
+    13 -> 81 [label="7"];
+    13 -> 66 [label="520"];
+    11 -> 75 [label="146"];
+    11 -> 35 [label="4"];
+    11 -> 58 [label="9"];
+    90 -> 42 [label="856"];
+    90 -> 3 [label="1072"];
+    90 -> 16 [label="6"];
+    90 -> 22 [label="7"];
+    90 -> 32 [label="234"];
+    99 -> 6 [label="10"];
+    99 -> 23 [label="1"];
+    99 -> 90 [label="859"];
+    99 -> 2 [label="148"];
+    68 -> 3 [label="10"];
+    68 -> 67 [label="7"];
+    66 -> 2 [label="1063"];
+    66 -> 94 [label="2"];
+    66 -> 14 [label="2"];
+    66 -> 22 [label="241"];
+    66 -> 43 [label="349"];
+    92 -> 74 [label="4"];
+    92 -> 24 [label="6"];
+    95 -> 54 [label="9"];
+    95 -> 15 [label="10"];
+    23 -> 99 [label="7"];
+    23 -> 96 [label="4"];
+    42 -> 60 [label="4"];
+    42 -> 77 [label="9"];
+    15 -> 95 [label="9"];
+    15 -> 43 [label="10"];
+    15 -> 9 [label="779"];
+    12 -> 67 [label="5"];
+    12 -> 86 [label="8"];
+    6 -> 34 [label="846"];
+    6 -> 98 [label="7"];
+    6 -> 99 [label="9"];
+    75 -> 73 [label="7"];
+    75 -> 70 [label="9"];
+    77 -> 57 [label="3"];
+    77 -> 42 [label="917"];
+    28 -> 39 [label="503"];
+    28 -> 43 [label="9"];
+    28 -> 63 [label="9"];
+    28 -> 32 [label="839"];
+    53 -> 7 [label="592"];
+    53 -> 28 [label="167"];
+    53 -> 65 [label="4"];
+    53 -> 83 [label="10"];
+    53 -> 11 [label="994"];
+    53 -> 39 [label="388"];
+    72 -> 84 [label="884"];
+    72 -> 44 [label="741"];
+    72 -> 2 [label="9"];
+    72 -> 88 [label="7"];
+    65 -> 63 [label="2"];
+    65 -> 53 [label="7"];
+    56 -> 27 [label="4"];
+    56 -> 82 [label="1"];
+    56 -> 10 [label="1080"];
+    37 -> 27 [label="570"];
+    37 -> 17 [label="7"];
+    37 -> 44 [label="9"];
+    76 -> 14 [label="10"];
+    76 -> 52 [label="2"];
+    18 -> 1 [label="9"];
+    18 -> 2 [label="9"];
+    98 -> 6 [label="5"];
+    98 -> 87 [label="125"];
+    64 -> 47 [label="343"];
+    64 -> 44 [label="6"];
+    64 -> 74 [label="2"];
+    64 -> 85 [label="304"];
+    97 -> 57 [label="1087"];
+    97 -> 100 [label="9"];
+    97 -> 25 [label="7"];
+    87 -> 26 [label="2"];
+    87 -> 98 [label="9"];
+    87 -> 81 [label="514"];
+    87 -> 40 [label="493"];
+    29 -> 59 [label="858"];
+    29 -> 5 [label="2"];
+    29 -> 50 [label="2"];
+    71 -> 22 [label="1085"];
+    71 -> 90 [label="344"];
+    71 -> 86 [label="2"];
+    71 -> 27 [label="8"];
+    100 -> 4 [label="4"];
+    100 -> 97 [label="4"];
+    69 -> 96 [label="1"];
+    69 -> 7 [label="5"];
+    69 -> 52 [label="386"];
+    69 -> 35 [label="210"];
+    61 -> 57 [label="4"];
+    61 -> 4 [label="9"];
+    61 -> 56 [label="514"];
+}
diff --git a/test/input/10nodegraph b/test/input/10nodegraph
new file mode 100644
index 0000000..dc8789e
--- /dev/null
+++ b/test/input/10nodegraph
@@ -0,0 +1,27 @@
+digraph G{
+    size ="8.5,11";
+    4 -> 8 [label="4"];
+    4 -> 10 [label="6"];
+    9 -> 6 [label="74"];
+    9 -> 10 [label="4"];
+    9 -> 7 [label="7"];
+    1 -> 7 [label="6"];
+    1 -> 2 [label="6"];
+    7 -> 2 [label="96"];
+    7 -> 9 [label="5"];
+    7 -> 1 [label="9"];
+    3 -> 6 [label="2"];
+    3 -> 1 [label="74"];
+    3 -> 5 [label="8"];
+    8 -> 5 [label="3"];
+    8 -> 4 [label="10"];
+    5 -> 3 [label="7"];
+    5 -> 8 [label="1"];
+    5 -> 7 [label="64"];
+    6 -> 3 [label="5"];
+    2 -> 7 [label="43"];
+    2 -> 5 [label="100"];
+    2 -> 1 [label="5"];
+    10 -> 4 [label="6"];
+    10 -> 9 [label="5"];
+}
diff --git a/test/input/20nodegraph b/test/input/20nodegraph
new file mode 100644
index 0000000..c50fca0
--- /dev/null
+++ b/test/input/20nodegraph
@@ -0,0 +1,91 @@
+digraph G{
+    size ="8.5,11";
+    14 -> 12 [label="2"];
+    14 -> 11 [label="3"];
+    14 -> 10 [label="7"];
+    14 -> 9 [label="5"];
+    7 -> 6 [label="3"];
+    7 -> 2 [label="3"];
+    7 -> 19 [label="1"];
+    7 -> 8 [label="2"];
+    4 -> 14 [label="28"];
+    4 -> 12 [label="35"];
+    4 -> 13 [label="8"];
+    4 -> 18 [label="1"];
+    4 -> 16 [label="3"];
+    4 -> 15 [label="9"];
+    17 -> 1 [label="29"];
+    17 -> 15 [label="3"];
+    17 -> 19 [label="6"];
+    17 -> 18 [label="5"];
+    17 -> 6 [label="3"];
+    6 -> 5 [label="30"];
+    6 -> 18 [label="7"];
+    6 -> 7 [label="2"];
+    6 -> 17 [label="5"];
+    6 -> 19 [label="3"];
+    12 -> 5 [label="4"];
+    12 -> 14 [label="4"];
+    12 -> 20 [label="2"];
+    12 -> 10 [label="2"];
+    18 -> 4 [label="8"];
+    18 -> 6 [label="1"];
+    18 -> 15 [label="5"];
+    18 -> 17 [label="9"];
+    3 -> 8 [label="8"];
+    3 -> 20 [label="7"];
+    3 -> 2 [label="8"];
+    3 -> 5 [label="8"];
+    2 -> 6 [label="22"];
+    2 -> 7 [label="9"];
+    2 -> 5 [label="7"];
+    2 -> 8 [label="2"];
+    2 -> 3 [label="6"];
+    19 -> 17 [label="4"];
+    19 -> 8 [label="3"];
+    19 -> 6 [label="6"];
+    19 -> 7 [label="6"];
+    13 -> 5 [label="31"];
+    13 -> 4 [label="2"];
+    13 -> 16 [label="4"];
+    8 -> 19 [label="9"];
+    8 -> 3 [label="6"];
+    8 -> 7 [label="8"];
+    8 -> 2 [label="2"];
+    1 -> 17 [label="34"];
+    1 -> 20 [label="27"];
+    1 -> 9 [label="2"];
+    1 -> 11 [label="1"];
+    16 -> 8 [label="26"];
+    16 -> 9 [label="27"];
+    16 -> 15 [label="1"];
+    16 -> 13 [label="5"];
+    16 -> 4 [label="4"];
+    11 -> 6 [label="31"];
+    11 -> 14 [label="3"];
+    11 -> 9 [label="8"];
+    11 -> 1 [label="3"];
+    20 -> 19 [label="20"];
+    20 -> 15 [label="22"];
+    20 -> 3 [label="7"];
+    20 -> 10 [label="8"];
+    20 -> 5 [label="2"];
+    20 -> 12 [label="7"];
+    5 -> 2 [label="6"];
+    5 -> 12 [label="7"];
+    5 -> 3 [label="4"];
+    5 -> 20 [label="2"];
+    15 -> 16 [label="5"];
+    15 -> 17 [label="1"];
+    15 -> 4 [label="7"];
+    15 -> 18 [label="7"];
+    10 -> 17 [label="32"];
+    10 -> 20 [label="4"];
+    10 -> 9 [label="5"];
+    10 -> 12 [label="6"];
+    10 -> 14 [label="5"];
+    9 -> 10 [label="2"];
+    9 -> 1 [label="9"];
+    9 -> 14 [label="5"];
+    9 -> 11 [label="5"];
+}
diff --git a/test/input/graphPosLittle b/test/input/graphPosLittle
new file mode 100644
index 0000000..2c9a1a4
--- /dev/null
+++ b/test/input/graphPosLittle
@@ -0,0 +1,11 @@
+10
+4 8 4 10 6
+9 6 74 10 4 7 7
+1 7 6 2 6
+7 2 96 9 5 1 9
+3 6 2 1 74 5 8
+8 5 3 4 10
+5 3 7 8 1 7 64
+6 3 5
+2 7 43 5 100 1 5
+10 4 6 9 5
diff --git a/test/input/graphPosMes b/test/input/graphPosMes
new file mode 100644
index 0000000..7645f75
--- /dev/null
+++ b/test/input/graphPosMes
@@ -0,0 +1,21 @@
+20
+14 12 2 11 3 10 7 9 5
+7 6 3 2 3 19 1 8 2
+4 14 28 12 35 13 8 18 1 16 3 15 9
+17 1 29 15 3 19 6 18 5 6 3
+6 5 30 18 7 7 2 17 5 19 3
+12 5 4 14 4 20 2 10 2
+18 4 8 6 1 15 5 17 9
+3 8 8 20 7 2 8 5 8
+2 6 22 7 9 5 7 8 2 3 6
+19 17 4 8 3 6 6 7 6
+13 5 31 4 2 16 4
+8 19 9 3 6 7 8 2 2
+1 17 34 20 27 9 2 11 1
+16 8 26 9 27 15 1 13 5 4 4
+11 6 31 14 3 9 8 1 3
+20 19 20 15 22 3 7 10 8 5 2 12 7
+5 2 6 12 7 3 4 20 2
+15 16 5 17 1 4 7 18 7
+10 17 32 20 4 9 5 12 6 14 5
+9 10 2 1 9 14 5 11 5
diff --git a/test/input/graphPosMidA b/test/input/graphPosMidA
new file mode 100644
index 0000000..0d93498
--- /dev/null
+++ b/test/input/graphPosMidA
@@ -0,0 +1,101 @@
+100
+96 23 3 69 6
+38 34 3 53 959
+86 17 452 19 135 12 8 71 4
+54 85 1 95 6 53 596
+10 48 1 78 1
+67 68 4 12 10 91 214
+85 35 144 12 880 84 9 54 10 82 184
+16 78 279 97 667 32 10 90 10 84 431
+8 16 910 49 3 1 5
+83 50 1060 53 7 79 8
+40 56 124 89 8 21 5
+43 15 5 28 1
+22 45 1014 90 3 84 3
+62 24 922 88 8 31 7 9 104
+78 10 7 33 7
+80 91 6 59 5
+55 34 6 73 7
+94 19 6 66 2 72 831 92 1025
+30 44 404 50 7
+19 25 9 94 2
+25 97 10 19 6 83 1033
+24 92 1 47 10
+88 29 1039 72 1 62 6
+93 3 508 25 609 16 213 63 335 41 5 5 9
+48 58 10 10 6
+82 56 8 9 7
+50 22 712 29 9 30 4
+73 55 8 75 6 83 327
+31 68 199 62 2 36 10
+74 72 128 64 10 92 4 53 159
+21 40 4 45 6
+4 61 4 100 10
+57 77 5 61 5 16 783 53 342
+5 32 797 93 8 29 4
+84 23 577 22 1 85 4
+35 79 4 11 1
+17 96 486 33 8 37 7
+2 15 168 18 2 52 615 72 10
+7 69 3 60 3 16 485
+1 72 804 42 116 8 6 18 7
+89 59 5 40 3
+26 46 5 87 2 73 1062
+45 21 7 32 9 33 781
+27 2 870 24 549 71 2 56 1
+59 80 8 89 6
+63 28 2 65 1
+41 30 514 51 5 93 8
+39 70 4 46 3
+47 24 5 49 2
+9 82 6 51 5
+46 39 3 26 9 74 221
+20 52 2 91 5
+79 83 2 35 5 52 451
+49 45 901 47 6 8 9
+70 75 4 39 2 61 722
+33 78 7 17 4 4 257
+81 13 5 3 6
+32 45 5 16 2
+36 31 9 13 1
+34 38 3 55 7 32 534 19 664
+3 81 5 68 8
+14 66 10 76 8 30 363 99 1058
+91 20 1 80 1
+52 76 6 20 6 4 664
+60 7 5 42 6 27 200 12 849 6 497
+44 37 3 64 8
+51 22 128 34 544 9 4 41 4
+58 50 273 11 10 48 9
+13 36 1 81 7 66 520
+11 75 146 35 4 58 9
+90 42 856 3 1072 16 6 22 7 32 234
+99 6 10 23 1 90 859 2 148
+68 3 10 67 7
+66 2 1063 94 2 14 2 22 241 43 349
+92 74 4 24 6
+95 54 9 15 10
+23 99 7 96 4
+42 60 4 77 9
+15 95 9 43 10 9 779
+12 67 5 86 8
+6 34 846 98 7 99 9
+75 73 7 70 9
+77 57 3 42 917
+28 39 503 43 9 63 9 32 839
+53 7 592 28 167 65 4 83 10 11 994 39 388
+72 84 884 44 741 2 9 88 7
+65 63 2 53 7
+56 27 4 82 1 10 1080
+37 27 570 17 7 44 9
+76 14 10 52 2
+18 1 9 2 9
+98 6 5 87 125
+64 47 343 44 6 74 2 85 304
+97 57 1087 100 9 25 7
+87 26 2 98 9 81 514 40 493
+29 59 858 5 2 50 2
+71 22 1085 90 344 86 2 27 8
+100 4 4 97 4
+69 96 1 7 5 52 386 35 210
+61 57 4 4 9 56 514