-ene eeee eent eete eevn en-v enee ener enne enp- ent- ente entp entr epee epen eper eppp eprp epte eptv eren erer eret erev erne erpe erre erve etee eten eter etne etnr etre ette ettn even ever evet evre n-tv neen neep neer neet neev nene nent nepe nepr nept nere nerr nert nerv net- nete nett netv neve nnnn nnpr nntn nnvt nprt npte nptn nren nrpn nter nttr nttv nvtv peen peep peer peet peev pen- pene penn pent pepe per- pere pern perp perr pert perv pete petn petr pett pnet pnpp pntr ppen pper pppn pppp pptn pptt pptv pre- pree pren prep pret prev prnp prtp prtr pten pter reen reep reet reev rene renn rent repe repp repr rept rere rert rete retr rett reve revp rnnt rnpv rntp rpet rppn rptn rrrr rtee rttp rtve rver teen teer teet teev tene tenn tenp tent tepe tepp ter- tere tern terp terr tete tetr tett tper tppp tppr tpte tptp tptr tre- tree tren tret trev trpe trpn trpp trpv trte trtr tten tter tttt tver tvrr tvtv veen veep veer veet ven- vene venn vent vepe vepr ver- vere vern vert vete vetr veve vret vrnn vrpn vten vtpr vver vvvv