[…] many clearly independet words-e.g. English prepositions, determiners, and auxiliary verbs of English-normally occurr without phrasal accent (such words are called LEANERS in Zwicky 1982) [Zwicky, A. M., 1982, Stranded ‘to’ and phonological phrasing in English, Linguistic 20.3-57]. - Zwicky (2004), a pag.354