If the relative pronoun is to be the subject of the clause's verb, "qui" is ordinarily used: « l'homme qui a volé ma bicyclette » ("the man who stole my bike"). Note that "qui" in this use does not change form to agree in any way with its antecedent: « les bicyclettes qui ont été volées » ("the bikes that were stolen"). However, it may occasionally be replaced with a form of "lequel" to specify the antecedent's gender or number. For example, while the phrase « Jean et Marie, qui vole(nt) des bicyclettes » ("Jean and Marie, who steal(s) bicycles") is ambiguous in speech (since "vole" and "volent" are homophones), the phrases « Jean et Marie, laquelle vole des bicyclettes » ("Jean and Marie, who steals bicycles") and « Jean et Marie, lesquels volent des bicyclettes » ("Jean and Marie, who steal bicycles") are not: in the former, only Marie is being described, while in the latter, both Jean and Marie are. This substitution is very rare, however.