-er -ey c-- ccc ccd cce cco ccp ccr ccs cdc cdd cde cdo cdp cdr cds cdy ce- cec ced cee ceo cep cer ces cey co- coc cod coe coo cop cor cos coy cpc cpd cpe cpo cpp cpr cps crc crd cre cro crp crr crs cry csc csd cse cso csp csr css csy cyc cyd cye cyo cyp cyr cys dcc dcd dce dco dcp dcr dcs ddc ddd dde ddo ddp ddr dds ddy de- dec ded dee deo dep der des dey doc dod doe doo dop dor dos doy dpc dpd dpe dpo dpp dpr dps drc drd dre dro drp drr drs dry dsc dsd dse dso dsp dsr dss dsy dy- dyc dyd dye dyo dyp dyr dys dyy ec- ecc ecd ece eco ecr ecs ed- edc edd ede edo edp edr eds edy eec eed eee eeo eep eer ees eey eo- eoc eod eoe eoo eop eor eos ep- epc epd epe epo epp epr eps erc erd ere ero erp err ers ery es- esc esd ese eso esp esr ess esy eyc eyd eye eyo eyp eyr eys oc- occ ocd oco ocp ocr ocs odc odd ode odo odp odr ods oec oed oee oeo oep oer oes oey oo- ooc ood ooo oop oor oos op- opc opd ope opo opp opr ops opy or- orc ord ore oro orp orr ors ory os- osc osd ose oso osp osr oss oyd oye oyo oys p-p pcc pcd pce pco pcp pcr pcs pdc pdd pde pdo pdp pdr pds pec ped pee peo pep per pes pey poc pod poe poo pop por pos poy ppc ppd ppe ppo ppp ppr pps prc prd pre pro prp prr prs pry ps- psc psd pse pso psp psr pss psy py- pyc pyd pye pyo pyr pys rcc rcd rce rco rcp rcr rcs rdc rdd rde rdo rdp rdr rds rdy re- rec red ree reo rep rer res rey roc rod roe roo rop ror ros roy rpc rpd rpe rpo rpp rpr rps rrc rrd rrp rrr rrs rsc rsd rse rso rsp rsr rss ry- ryc ryd rye ryo ryr rys ryy scc scd sce sco scp scr scs sdc sdd sde sdo sdp sdr sds sdy se- sec sed see seo sep ser ses sey soc sod soe soo sop sor sos soy spc spd spe spo spp spr sps spy sr- src srd sre sro srp srr srs sry ss- ssc ssd sse sso ssp ssr sss sy- syc syd sye syp syr sys ycc ycd yce yco ycp ycs ycy yde ydo yds ydy yec yed yee yeo yep yer yes yey yoc yod yoe yoo yop yor yos yoy ypd ypo yps yrc yre yro yrp yrs ysc yse yso ysp ysr yss ysy yyc yye yys yyy