-er -ey c-- ccc ccd cce ccm cco ccr cdc cdd cde cdm cdo cdr cdy ce- cec ced cee cem ceo cer cey cmc cmd cme cmm cmo cmr cmy co- coc cod coe com coo cor coy crc crd cre crm cro crr cry cyc cyd cye cym cyo cyr dcc dcd dce dcm dco dcr ddc ddd dde ddm ddo ddr ddy de- dec ded dee dem deo der dey dmc dmd dme dmm dmo dmr doc dod doe dom doo dor doy drc drd dre drm dro drr dry dy- dyc dyd dye dym dyo dyr dyy ec- ecc ecd ece ecm eco ecr ed- edc edd ede edm edo edr edy eec eed eee eem eeo eer eey em- emc emd eme emm emo emr eo- eoc eod eoe eom eoo eor erc erd ere erm ero err ery eyc eyd eye eym eyo eyr m-o m-r mc- mcc mcd mce mcm mco mcr mdc mdd mde mdm mdo mdr mdy mec med mee mem meo mer mey mmc mmd mme mmm mmo mmr moc mod moe mom moo mor moy mrc mrd mre mrm mro mrr mry my- myc myd mye mym myo myr oc- occ ocd ocm oco ocr odc odd ode odm odo odr oec oed oee oem oeo oer oey om- omc omd ome omm omo omr omy oo- ooc ood oom ooo oor or- orc ord ore orm oro orr ory oyd oye oyo rcc rcd rce rcm rco rcr rdc rdd rde rdm rdo rdr rdy re- rec red ree rem reo rer rey rmc rmd rme rmm rmo rmr roc rod roe rom roo ror roy rrc rrd rrm rrr ry- ryc ryd rye rym ryo ryr ryy ycc ycd yce yco ycy yde ydo ydy yec yed yee yem yeo yer yey ymc yme ymm ymo yoc yod yoe yom yoo yor yoy yrc yre yro yyc yye yyy