p frac2 6 12 4
d 0 3 1
d 1 2 2
d 2 1 2
d 4 5 1
a 0 1 0 1 1
a 0 2 0 1 1
a 1 2 0 1 1
a 1 3 0 1 1
a 1 5 0 1 1
a 2 1 0 1 1
a 2 3 0 1 1
a 2 5 0 1 1
a 3 0 0 1 1
a 4 1 0 1 1
a 4 2 0 1 1
a 5 4 0 1 1
