Consider the given sequential circuit designed using D-Flip-flops. The circuit is initialized with some value (initial state). The number of distinct states the circuit will go through before returning back to the initial state is:



Given below is the diagram of a synchronous sequential circuit with one J-K flip-flop and one T flip-flop with their outputs denoted as A and B respectively, with \( J_A = (A' + B') \), \( K_A = (A + B) \), and \( T_B = A \). Starting from the initial state \( AB = 00 \), the sequence of states \( (AB) \) visited by the circuit is
