3.12 Draw box and pointer diagrams for the following Scheme lists: ((((a)))) (1 (2 (34)) (5)) ((a )) ((c) (d) b) e) Use the box and pointer diagrams of the last exercise to compute the following for each Sche list for which they make sense: 3.13 (car (car L)) (car (cdr L)) (car (cdr (cdr (cdr L)))) (cdr (car (cdr (cdr L)))) 3.14 Represent the following elements as car/cdr expressions of the lists of Exercise 3.12: of the first list of the second list of the third list