Problem 2.24

SICP Exercise 2.24

The expression (list 1 (list 2 (list 3 4))) is basically (1 (2 (3 4))). The tree structure is:

rect { fill: lightblue; stroke: black; opacity: 0.5; stroke-width: 1.5; }

line { stroke: black; opacity: 0.5; stroke-width: 1.5; } (1 (2 (3 4)))1(2 (3 4))2(3 4)34