Representation Notes

This sentence suggests that gerunds should be in noun brackets.
{Bobby} [likes] {drawing}. B(A,C)

However,
{Bobby} [likes] %drawing% B(A,C) or B(A,C(_,_))

{Bobby} [likes drawing] {pictures}. B(A,C)
{Bobby} [likes][drawing] {pictures}. B(A,C(_,D))
{Bobby} [likes][to draw] {pictures}. B(A,C(_,D))

So the gerund can be P(_,_) and the infinitive can be the same or, if a direct object is specified, be P(_,Y).

{Bobby} [drew]. B(A,_)

An argument for structural reuse is in the sentence:
As Bobby likes to draw pictures with crayons, he went to the store and he purchased a box of them.
<As> [[1]], {he}[went to]{the store} and {he}[purchased] {a box}[of]{them}.
As([[1]],[[2]])

The <> brackets represent elements or operators that relate predicates or sequences of predicates, logic operations and other punctuation relevant to processing.