UNSATISFIABLE

aa ab ae ai al an as at ba be bi ef el en es et fa fe if in is it la li na ne nu si ta ti un us ut

aal aas aba abs aft ail ain ais ait ala alb ale als alt ana ane ani ant ass ate baa bal ban bas bat bel ben bes bet bin bis bit bun bus but eat eau efs eft elf els ens ess eta fab fan fas fat fen fes fet feu fib fie fil fin fit flu fub fun ifs ins its lab las lat lea lei les let leu lib lie lin lis lit nab nae neb net nib nil nit nub nus nut sab sae sal sat sau sea sei sel sen set sib sin sis sit sub sue sun tab tae tan tas tau tea tel ten tie til tin tis tub tui tun uns use uta ute uts

aals abas abet able abut ails ains aits alae alan alas alba albs alef ales alfa alif alit alts anal anas anes anil anis ansa anta ante anti ants anus asea ates aunt baal baas bail bait bale bals bane bani bans base bass bast bate bats bean beat beau bels belt bens bent best beta bets bias bile bine bins bint bise bite bits blae blat blet blin blue buna buns bunt buss bust bute buts east eats efts elan enuf etas etna etui fabs fail fain fane fans fast fate fats faun feal feat felt fens fess fest feta fets feus fiat fibs fila file fils fine fins fist fits flab flan flat flea flit flub flue flus fubs fuel funs fuse fuss ibis ilea ilia inia inti isba isle labs lain lane lase lass last late lati lats latu leaf lean leas left leis lens lent less lest lets libs lief lien lies lieu life lift line lins lint list lite lits litu lube lues luna lune lunt lust lute nabe nabs naif nail nala neat nebs neif ness nest nets nibs nils nisi nite nits nubs nuts sabe sabs safe sail sain sale sals salt sane sans sate sati saul seal seas seat seif seis self sels sent seta sets sial sibs sift silt sine sins site sits slab slat slit slub slue slut snib snit snub stab stub stun suba subs sues suet suit suns tabs tabu tael tail tain tala tale tali tans tass taus teal teas tela tels tens ties tile tils tine tins tuba tube tubs tufa tuis tule tuna tune tuns ulan ulna unai unbe unit uses utas utes