Construct the symbolic expressions illustrated on this page via the cons primitive in Scheme.
The entities named a through h should be symbols. As a help, the rightmost part of the structure is made by (cons 'g 'h).
'g is equivalent to (quote g), meaning that g is not evaluated, but taken for face value.
Experiment with h being the empty list. Try to use a proper list function, such as length, on your structures.