please show work

For each problem, note the initial contents of the registers, trace the execution of the short program, and then show the final updated contents of the registers. Problem 3 Initial values of registers x1.5 X2:5 X3:5 X4:5 Program sub x1,x2,x3 cbz x1, label1 addi x4,4,#1 b label2 label1: subi x4,x4,#1 label2: addi x3,x3,#1 Final values of registers x1: X2: x3: X4