1. (3 points each) Consider the following two variable bindings in Lisp:

(setq x (a b c d))

(setq y (4 3 2 1))

Using only the variables x and y and the functions car, cdr and cons, provide Lisp S-expressions for generating the following:

1. (d c b a)
2. (4 c (b 2))
3. ((a b c d) . 1)
4. (((a c) (1 2)) . a)
5. ((a 1) (b 2) (c 3) (d 4))