eeee eefe eery eete efet effy eft- erer eret erft erre erye etee eter etfe etre ette etty eyer eyet eyey eyre eyry eyte eyyr feer feet fefe feff fere ferr fert fery fete fetr fett feyr feyt ffee ffff ffrr fftf free fret frey frye fter ftfy fyfe fyre fyry reef reet refe reff refr reft rere rert rery rete retr rett rety reye rfef rrrr rtee ryet ryfe ryff ryft rytt ryyf ryyt teef teer teet teff teft ter- tere terf terr tery tete tetr tett teye teyr tre- tree tref tret trey trfr trte trtr try- trye tter ttff tttt tyee tyer tyet tyfe tyff tyft tyr- tyre tyrf tyrr tyte tytt tyty yeer yeet yefe yeff yeft yere yerr yert yery yete yett yeye yeyr yfet yfte ytre yyfe yyff yyyy