*vertices 15 10
 1 "A"
 2 "B"
 3 "C"
 4 "D"
 5 "E"
 6 "F"
 7 "G"
 8 "H"
 9 "I"
10 "J"
11 "1"
12 "2"
13 "3"
14 "4"
15 "5"
*matrix
1 0 0 0 0
1 1 0 0 0
1 1 1 0 0
1 1 1 1 0
1 1 1 1 1
0 0 0 0 1
1 0 0 0 1
1 1 0 1 1
0 0 0 0 0
1 0 1 0 1