16 33 digraph
"1"  50 350
"2"  50 250
"3"  50 150
"4"  50  50
"5" 150 350
"6" 150 250
"7" 150 150
"8" 150  50
"9" 250 350
"10" 250 250
"11" 250 150
"12" 250  50
"13" 350 350
"14" 350 250
"15" 350 150
"16" 350  50
"*" 0 4 3
"*" 0 1 1
"*" 1 4 1
"*" 1 2 2
"*" 2 6 5
"*" 2 3 3
"*" 3 7 2
"*" 4 5 3
"*" 4 8 2
"*" 4 9 1
"*" 5 1 6
"*" 5 9 1
"*" 6 1 2
"*" 6 5 1
"*" 6 7 1
"*" 6 9 1
"*" 7 2 1
"*" 8 12 4
"*" 8 13 5
"*" 9 8 2
"*" 9 13 1
"*" 10 6 3
"*" 10 9 2
"*" 10 11 2
"*" 11 6 2
"*" 11 7 3
"*" 11 15 1
"*" 13 12 2
"*" 13 14 1
"*" 14 9 5
"*" 14 10 2
"*" 15 10 3
"*" 15 14 2