Finite-State Machine Using a T flip flop

I need to design a Finite-State Machine with sequence:
S0, S3, S2, S1, S6, S3, S7, S0 when D=0
AND
S0, S2, S4, S6, S5, S7, S0 when D=1
Using a T flip flop
My problem is the 2 S3 what to do with it.