Figure $2$ shows a sequential logic circuit with four flip$-$flops $($XO$,$ X$1,$ X$2$ and X$3)$ with externalclock $($input pulses$)$ applied to the clock input of the first flip$-$flop. Use MMLogic to build the logiccircuit shown in Figure $2.$ Save your design as BK$9999\_42,$ where $9999$ are the last $4$ digits of your matrix no