1 syllable:
ann's, anne's, annes, ban's, banns, bans, benz, branz, caen's, can's, cannes, cans, chan's, clans, crans, dan's, danz, fan's, fans, fans', flans, frans, franz, franze, fsanz, gans, ganz, ganze, glans, glanz, grans, han's, hands, hannes, hanns, hans, jan's, jannes, jans, janz, kanz, klan's, klans, krans, kranz, lanz, lanze, man's, mann's, mannes, manns, mans, manz, nan's, pan's, pans, pflanze, plan's, plans, plans', rans, ranz, sannes, sans, sanz, scans, schanze, span's, spans, spanz, stan's, stans, stanze, tans, trans, tranz, vannes, vans, vtrans, xanes

2 syllables:
afghans, alcan's, all-trans, bedpans, bilanz, byzanz, c-span's, caftans, caltrans, cancans, cezanne's, chavannes, chimpanze, deadpans, dextrans, diane's, dishpans, divans, dustpans, galanz, goodman's, greenspan's, humanz, inspans, intrans, iran's, itrans, japan's, japans, joannes, kaftans, lianes, lifespans, lipans, mccann's, meehans, mfans, outspans, pecans, rattans, retrans, roseanne's, rosecrans, saucepans, sedans, stockman's, sub-clans, substanz, sudan's, suntans, taipans, tarzan's, tympans, vacanze, wingspans

3 syllables:
also-rans, bantustans, bruno ganz, businessman's, businessmans, callahan's, caravans, castellans, counterplans, diskrepanz, eurovans, gamelans, intertrans, kazakhstan's, kosovans, lumberman's, minivans, pakistan's, prestonpans, protistans, rosenkrans, sacristans, simutrans, super-cannes, taliban's, talibans, tragopans

4 syllables:
acaridans, afghanistan's, afghanistans, mohammedans, tajikistan's

6 syllables:
acanthocephalans, list of hindi film clans