-ene bbbb bbeb bbet bebb bebe beeb been beep beet bene benn bent benu bete bett betu beux bnet bnpp btbp bten btex bttb bubb bube bubu buen bueu bunb bune bunn bunt bunu but- bute butt eben eeee eent eete eetu eext enb- enbn enee enne ennu enp- ent- ente entp enue enut epee epen eppp epte epub epxp etee eten etne ette ettn ettu etun etux exen expn expt exte n-up nbpp nebb nebe nebn nebu neeb neen neep neet nene nent nenu nepe nept net- netb nete nett neue neun neut neuu nexe next nexx nnnn nntn npte nptn nteu ntnu nube nuee nune nunn nunt nupe nute nutt nutu peen peep peet pen- pene penn pent penu pepe pete petn pett peun peut pnet pneu pnpp pnup pnxt ppen pppn pppp pptn pptt pten pu-e pube pubu puet pueu pune punt punu punx pupe pupu put- pute putt putu puxe tbtp tebu teen teet tenb tene tenn tenp tent tenu tepe tepp tepu tete tett tetu tetx teut text tneb tnut tppp tpte tptp tput ttbb tten tttt tubb tube tubu tuen tuet tunb tune tunn tunu tupe tupu tute tutt tutu txen ubbe ubet uext unbe uneb unee unen unne untb unte unut upbe upen upne upnp uppe uppp uppu upup utep utne uttu uuen uuuu uxue xbee xen- xene xenn xenu xexe xnee xnet xtep xuxu xxxx