12 23 graph
a  50  50
b 150  50
c 250  50
d 350  50
e  50 150
f 150 150
g 250 150
h 350 150
i  50 250
j 150 250
k 250 250
l 350 250
"*" 0 1 10
"*" 0 4 2
"*" 0 5 8
"*" 1 2 2
"*" 1 5 3
"*" 2 3 2
"*" 2 5 5
"*" 2 6 1
"*" 3 6 2
"*" 3 7 9
"*" 4 5 6
"*" 4 8 1
"*" 4 9 3
"*" 5 6 3
"*" 5 9 2
"*" 6 7 10
"*" 6 9 6
"*" 6 10 9
"*" 6 11 4
"*" 7 11 5
"*" 8 9 3
"*" 9 10 2
"*" 10 11 1