Reduce the following state tables to the minimum number of states:

2. SI present next state present state X=0 1 output So Sg S 0 S3 S2 1 S2 S4 S3 0 Si S4 1 Si 0 Sg So 1 S7 0 Si 1 S2 S3 S4 Ss S6 S7 So S6