The document provides a list of one-word and complex English prepositions beginning with letters A through M, along with examples of how each preposition is used in sentences. Some of the one-word prepositions listed include aboard, about, above, across, after, against, along, amid, among, anti, around, as, astride, at, atop, bar, behind, below, beneath, beside, besides, between, beyond, but, by. Complex prepositions include according to, ahead of, along with, apart from, as for, aside from, as per, as to, as well as, away from, because of, but for, by means of, close to, contrary to,