-er -ey c-- ccc cce cco ccr ccu ce- cec cee ceo cer ceu cey co- coc coe coo cor cou coy crc cre cro crr cru cry cuc cue cuo cur cuu cuy cyc cye cyo cyr ec- ecc ece eco ecr ecu eec eee eeo eer eey eo- eoc eoe eoo eor eou erc ere ero err eru ery eu- euc eue eur eyc eye eyo eyr oc- occ oco ocr ocu oec oee oeo oer oey oo- ooc ooo oor or- orc ore oro orr oru ory ou- ouc oue ouo our oye oyo rcc rce rco rcr rcu re- rec ree reo rer reu rey roc roe roo ror rou roy rrc rrr rru ruc rue ruo rur ruu ruy ry- ryc rye ryo ryr ryu ryy ucc uce uco ucr ucu uec uee uer uey uoc uoe uoo uor ur- urc ure uro urr uru ury uuc uue uur uuu uyc uyo uyu ycc yce yco ycu ycy yec yee yeo yer yey yoc yoe yoo yor you yoy yrc yre yro yru yue yuo yur yuu yuy yyc yye yyu yyy