Please help me out with this racket language question

3. (20 pts) For each of the following Racket forms, show the resulting list structure in boxes-and-arrows representation. a) (cons 1 (cons 2 (cons 3 (cons 4 '())))) b) (cons 1 (cons 2 3)) c) (cons 1 (cons (cons 2 (cons 3 '())) (cons 4 (cons 5'())))) d) (append (cons 1 (cons 2 '())) (list (cons 3 4)) (list 5 6 7))