NFA N4 Pg 57
a,b
phi,1,2,3,12,13,23,123
13
1,12,13,123
phi,a,phi
phi,b,phi
1,a,phi
1,b,2
2,a,23
2,b,3
3,a,13
3,b,phi
12,a,23
12,b,23
13,a,13
13,b,2
23,a,123
23,b,3
123,a,123
123,b,23