Columbia subject headings:
English language--Syntax.
English language--Verb.
Grammar, Comparative and general--Syntax.
Grammar, Comparative and general--Verb.
Harvard subject headings:
English language--Syntax
English language--Verb
Grammar, Comparative and general--Syntax.
Grammar, Comparative and general--Verb.
Princeton subject headings:
English language--Syntax.
English language--Verb.
Grammar, Comparative and general--Syntax.
Grammar, Comparative and general--Verb.