Assume that r2 contains the initial value Explain the effect of each of the following six instructions, and give the value in r2 after each instruction executes

a. STR r1,[r2]
b. STR r1,[r2, #8]
c. STR r1,[r2, #8]!
d. STR r1,[r2], #8
e. STR r1,[r2, r0, LSL #8]
f. STMFD r2!,{r1,r2}