UNREVERSABLE

ab ae al an ar as ba be el en er es la na ne nu re un us

abs alb ale als ane arb are ars ave bal ban bar bas bee bel ben bes bra brr bun bur bus ear eau eel els ens era ere ern err ers eve lab lar las lav lea lee les leu lev luv nab nae neb nee nub nus ran ras reb ree res rev rub rue run sab sae sal sau sea see sel sen ser sub sue sun uns urb urn use van var vas vau vee

able albs alee ales anes anus arbs ares arse aver aves bale bals bane bans bare barn bars base bean bear beau been beer bees bels bene bens blae blue blur brae bran bras bree bren buna buns bura burl burn burr burs earl earn ears ease eave eels elan else eras erne erns errs esne even ever eves labs lane lars lase lave lavs lean lear leas leer lees lens leva lube lues luna lune lure luvs nabe nabs nave near nebs neve nubs nurl rale rare rase rave real rear rebs reel rees revs rube rubs ruer rues rule rune runs ruse sabe sale sane saul save seal sear seel seen seer sene sera sere slab slub slue slur snub suba suer sura sure ulan ulna ulva unbe urbs urea urns ursa user uvea vale vane vans vars vase vaus veal veer vees vela vena vera verb