-er -ey eee eef eeo eep eer ees eet eey ef- efe eff efo efp efr efs eft eo- eoe eof eoo eop eor eos eot ep- epe epf epo epp epr eps ept ere erf ero erp err ers ert ery es- ese esf eso esp esr ess est esy ete etf eto etp etr ets ett ety eye eyo eyp eyr eys eyt fee fef feo fep fer fes fet fey ffe fff ffo ffp ffr ffs fft ffy foe fof foo fop for fos fot foy fpe fpo fpp fpr fps fpt fpy fre frf fro frp frr frs frt fry fse fsf fso fsp fsr fss fst fte ftf fto ftp ftr fts ftt fty fy- fye fyo fyp oee oef oeo oep oer oes oet oey of- ofe off ofo ofp ofr ofs oft oo- oof ooo oop oor oos oot op- ope opf opo opp opr ops opt opy or- ore orf oro orp orr ors ort ory os- ose osf oso osp osr oss ost ot- ote otf oto otp otr ots ott oye oyo oys p-p pee pef peo pep per pes pet pey pfe pff pfo pfp pfr pfs pft pfy poe pof poo pop por pos pot poy ppe ppf ppo ppp ppr pps ppt pre prf pro prp prr prs prt pry ps- pse psf pso psp psr pss pst psy pt- pte ptf pto ptp ptr pts ptt pty py- pye pyf pyo pyr pys pyt re- ree ref reo rep rer res ret rey rfe rff rfo rfp rfr rfs rft roe rof roo rop ror ros rot roy rpe rpf rpo rpp rpr rps rpt rrf rrp rrr rrs rrt rse rsf rso rsp rsr rss rst rte rtf rto rtp rtr rts rtt rty ry- rye ryf ryo ryr rys ryy se- see sef seo sep ser ses set sey sfe sff sfo sfp sfr sfs sft soe sof soo sop sor sos sot soy spe spf spo spp spr sps spt spy sr- sre srf sro srp srr srs srt sry ss- sse ssf sso ssp ssr sss sst ste stf sto stp str sts stt sty sy- sye syp syr sys syt te- tee tef teo tep ter tes tet tey tfe tff tfo tfp tfr tfs tft to- toe tof too top tor tos tot toy tpe tpf tpo tpp tpr tps tpt tre trf tro trp trr trs trt try tse tsf tso tsp tsr tss tst tsy tte ttf tto ttp ttr tts ttt tty tye tyf tyo typ tyr tys tyt yee yef yeo yep yer yes yet yey yfe yff yfr yfs yft yoe yof yoo yop yor yos yot yoy ypf ypo yps yre yrf yro yrp yrs yrt yse yso ysp ysr yss yst ysy yte ytf yto ytp ytr yts ytt yye yyf yys yyt yyy