1 syllable:
beens, binns, bins, binz, brins, chinn's, finn's, finns, fins, grins, guines, gwinn's, hinz, hinze, in's, inn's, inns, inns', ins, jinns, kin's, linns, lins, linz, lynn's, mihn's, minns, minze, pins, prins, prinz, quinn's, quins, quinze, sins, skin's, skins, skins', spins, thinnes, thins, tins, twins, twins', twinz, whins, win's, wins, winze, wynn's, wynns, zins

2 syllables:
add-ins, akins, askin's, askins, auxins, barkskins, begin's, begins, berlin's, berlins, blow-ins, break-ins, breastpins, buckskins, cave-ins, chagrins, chemins, chopins, crankpins, crooklyn's, deerskins, dextrins, drive-ins, drop-ins, duckpins, fade-ins, fivepins, foreskins, hagins, has-beens, hatpins, headpins, hutchins, joycelyn's, junkins, kamins, kidskins, kingpins, kronprinz, lead-ins, levin's, linchpins, lynchpins, mcginnes, mullins, pigskins, plug-ins, provinz, puffins, pushpins, queenpins, redskins', shebeens, sheepskins, shoo-ins, shut-ins, sit-ins, solwin's, sowins, step-ins, stickpins, tailfins, tailspins, teach-ins, tenpins, tie-ins, trade-ins, tuck-ins, unpins, walk-ins, webkinz, weigh-ins

3 syllables:
augustins, candlepins, catechins, chinkapins, chinquapins, cocteau twins, colicins, freddie prinze, hodgetwins, johnny sins, juan-les-pins, mandolins, medecins, might-have-beens, pfefferminze, porphyrins, pyrethrins, safranins, sysadmins, theremins, thoroughpins, underpins, unitrin's, violins, yellowshins

4 syllables:
batman begins, subtilisins

5 syllables:
cardiolipins, gemini the twins, seven deadly sins, uroporphyrins

3 syllables:
spectacles, genitals, messages, premises, elephas, entrances, festivals, gentleman's, medicines, sentences, skeletons, specimens, vegetables

4 syllables:
collectibles, professionals

6 syllables:
heterosexuals