-er -ey ddd dde ddp ddr dds ddt ddy de- ded dee dep der des det dey dpd dpe dpp dpr dps dpt drd dre drp drr drs drt dry dsd dse dsp dsr dss dst dsy dtd dte dtp dtr dts dtt dty dy- dyd dye dyp dyr dys dyy ed- edd ede edp edr eds edt edy eed eee eep eer ees eet eey ep- epd epe epp epr eps ept erd ere erp err ers ert ery es- esd ese esp esr ess est esy etd ete etp etr ets ett ety eyd eye eyp eyr eys eyt p-p pdd pde pdp pdr pds pdt ped pee pep per pes pet pey ppd ppe ppp ppr pps ppt prd pre prp prr prs prt pry ps- psd pse psp psr pss pst psy pt- ptd pte ptp ptr pts ptt pty py- pyd pye pyr pys pyt rdd rde rdp rdr rds rdt rdy re- red ree rep rer res ret rey rpd rpe rpp rpr rps rpt rrd rrp rrr rrs rrt rsd rse rsp rsr rss rst rtd rte rtp rtr rts rtt rty ry- ryd rye ryr rys ryy sdd sde sdp sdr sds sdt sdy se- sed see sep ser ses set sey spd spe spp spr sps spt spy sr- srd sre srp srr srs srt sry ss- ssd sse ssp ssr sss sst std ste stp str sts stt sty sy- syd sye syp syr sys syt tdd tde tdp tdr tds tdt tdy te- ted tee tep ter tes tet tey tpd tpe tpp tpr tps tpt trd tre trp trr trs trt try tsd tse tsp tsr tss tst tsy ttd tte ttp ttr tts ttt tty tyd tye typ tyr tys tyt yde yds ydt ydy yed yee yep yer yes yet yey ypd yps yre yrp yrs yrt yse ysp ysr yss yst ysy ytd yte ytp ytr yts ytt yye yys yyt yyy