UNFEASIBLE

ab ae ai al an as ba be bi ef el en es fa fe if in is la li na ne nu si un us

abs ail ain ais alb ale als ane ani bal ban bas bee bel ben bes bin bis bun bus eau eel efs elf els ens fab fan fas fee fen fes feu fib fie fil fin flu fub fun ifs ins lab las lea lee lei les leu lib lie lin lis nab nae neb nee nib nil nub nus sab sae sal sau sea see sei sel sen sib sin sub sue sun uns use

able ails ains albs alee alef ales alif anes anil anis anus bail bale bals bane bani bans base bean beau beef been bees bels bene bens bias bile bine bins bise blae blin blue buna buns ease eels elan else enuf esne fabs fail fain fane fans faun feal feeb feel fees fens feus fibs fila file fils fine fins flab flan flea flee flub flue flus fubs fuel funs fuse ilea isba isle labs lain lane lase leaf lean leas lees leis lens libs lief lien lies lieu life line lins lube lues luna lune nabe nabs naif nail nebs neif nibs nils nubs sabe safe sail sain sale sane saul seal seel seen seif self sene sial sine slab slub slue snib snub suba ulan ulna unai unbe