The `asm2/f07.s`

file contains 8 different function definitions. Take a look.

1. Which of these functions compile to identical bodies (ignoring variable
names: `a1`

and `a2`

are considered identical)?

2. Which of these functions, if any, might involve pointer arithmetic, rather than integer arithmetic?

3. What might be the types of `a1`

and `b1`

?