-er -ey eee eef een eer ees eet eey ef- efe eff efr efs eft en- ene enf enn enr ens ent eny ere erf ern err ers ert ery es- ese esf esn esr ess est esy ete etf etn etr ets ett ety eye eyn eyr eys eyt fee fef fen fer fes fet fey ffe fff ffn ffr ffs fft ffy fne fnf fnn fnr fns fnt fre frf frn frr frs frt fry fse fsf fsn fsr fss fst fte ftf ftn ftr fts ftt fty fy- fye fyn ne- nee nef nen ner nes net ney nfe nff nfn nfr nfs nft nne nnf nnn nns nnt nre nrf nrn nrr nrs nrt nry nse nsf nsn nsr nss nst nsy nte ntf ntn ntr nts ntt nye nyf nyn nys nyt nyy re- ree ref ren rer res ret rey rfe rff rfn rfr rfs rft rnn rnr rns rnt rny rrf rrn rrr rrs rrt rse rsf rsn rsr rss rst rte rtf rtn rtr rts rtt rty ry- rye ryf ryn ryr rys ryy se- see sef sen ser ses set sey sfe sff sfn sfr sfs sft sne snf snn snr sns snt sny sr- sre srf srn srr srs srt sry ss- sse ssf ssn ssr sss sst ste stf stn str sts stt sty sy- sye syn syr sys syt te- tee tef ten ter tes tet tey tfe tff tfn tfr tfs tft tne tnf tnn tnr tns tnt tre trf trn trr trs trt try tse tsf tsn tsr tss tst tsy tte ttf ttn ttr tts ttt tty tye tyf tyn tyr tys tyt yee yef yen yer yes yet yey yfe yff yfr yfs yft yne ynn yns yny yre yrf yrn yrs yrt yse ysr yss yst ysy yte ytf ytn ytr yts ytt yye yyf yys yyt yyy