Identify the circuit and draw the state diagram for below given Verilog using T$-$FFand write the equivalent structural code for the same with the test bench

Module tee$2($y$\_$out, x$\_$in$,$clock,reset$)$;

Input x$\_$in;

Output y$\_$out;

Reg$[1$:$0]$ state;

Parameter S$0=2$b$00,$ S$1=2$b$01,$ S$2=2$b$10,$ S$3=2$b$11$;

always@$($posedge clock, negedge reset$)$;

if $($ reset$==0)$

state$=$