-er -ey c-- ccc cce ccm cco ccr ccu ccx ce- cec cee cem ceo cer ceu cex cey cmc cme cmm cmo cmr cmu cmx cmy co- coc coe com coo cor cou cox coy crc cre crm cro crr cru crx cry cuc cue cum cuo cur cuu cuy cxc cxo cxr cxx cyc cye cym cyo cyr ec- ecc ece ecm eco ecr ecu ecx eec eee eem eeo eer eex eey em- emc eme emm emo emr emu emx eo- eoc eoe eom eoo eor eou erc ere erm ero err eru ery eu- euc eue eur eux ex- exc exe exo exr exu exx exy eyc eye eym eyo eyr m-o m-r mc- mcc mce mcm mco mcr mcu mcx mec mee mem meo mer meu mex mey mmc mme mmm mmo mmr mmu mmx moc moe mom moo mor mou mox moy mrc mre mrm mro mrr mru mrx mry muc mue mum mur muu mux muy mxc mxr mxu my- myc mye mym myo myr myu myx oc- occ ocm oco ocr ocu ocx oec oee oem oeo oer oex oey om- omc ome omm omo omr omu omx omy oo- ooc oom ooo oor oox or- orc ore orm oro orr oru orx ory ou- ouc oue oum ouo our ox- oxc oxo oxx oxy oye oyo rcc rce rcm rco rcr rcu rcx re- rec ree rem reo rer reu rex rey rmc rme rmm rmo rmr rmx roc roe rom roo ror rou rox roy rrc rrm rrr rru ruc rue rum ruo rur ruu rux ruy rxr ry- ryc rye rym ryo ryr ryu ryy ucc uce ucm uco ucr ucu uec uee uem uer uey um- umc ume umm umo umr umu uoc uoe uom uoo uor uox ur- urc ure urm uro urr uru urx ury uuc uue uum uur uuu uxc uxo uxr uxu uyc uyo uyu xcr xcx xee xem xer xeu xex xmc xmm xmo xmr xmu xmx xoc xom xoo xor xox xrc xrx xry xue xxo xxx xxy xyr xyy ycc yce yco ycu ycy yec yee yem yeo yer yex yey ymc yme ymm ymo yoc yoe yom yoo yor you yox yoy yrc yre yro yru yue yum yuo yur yuu yux yuy yxe yxy yyc yye yyu yyy