-ene eeee eefe eefn eent eete efen efet eft- eftp enee ener enfp enne enp- ent- ente entp entr epee epen eper eppp eprp epte eren erer eret erft erne erpe erre etee eten eter etfe etne etnr etre ette ettn feen feer feet fefe feff fene fenn fent fere fern ferr fert fete fetp fetr fett ffee ffff ffrr fftf fnet fprf free fren frep fret ften fter ftpe neef neen neep neer neet nefe neff nene nent nepe nepr nept nere nerf nerr nert net- nete nett nfer nfff nnnn nnpr nntn nprt npte nptn nren nrpn nter ntfp nttr peen peep peer peet peff pen- pene penn pent pepe per- pere perf pern perp perr pert pete petn petr pett pfet pfff pffr pfft pfte pnet pnpp pntr ppen pper pppn pppp pprf pptn pptt pre- pree pref pren prep pret prnp prtp prtr pten pter ptrf reef reen reep reet refe reff refn refr reft rene renn rent repe repp repr rept rere rert rete retr rett rfef rnnt rntp rpet rppn rptn rrrr rtee rttp teef teen teer teet teff teft tene tenn tenp tent tepe tepp ter- tere terf tern terp terr tete tetr tett tfnp tfpt tftp tnef tper tppp tppr tpte tptp tptr tre- tree tref tren tret trfr trpe trpn trpp trte trtr tten tter ttff ttfn tttt