-er -ey c-- ccc ccd cce cco ccr ccu cdc cdd cde cdo cdr cdu cdy ce- cec ced cee ceo cer ceu cey co- coc cod coe coo cor cou coy crc crd cre cro crr cru cry cuc cud cue cuo cur cuu cuy cyc cyd cye cyo cyr dcc dcd dce dco dcr dcu ddc ddd dde ddo ddr ddu ddy de- dec ded dee deo der deu dey doc dod doe doo dor dou doy drc drd dre dro drr dru dry duc dud due duo dur duy dy- dyc dyd dye dyo dyr dyu dyy ec- ecc ecd ece eco ecr ecu ed- edc edd ede edo edr edu edy eec eed eee eeo eer eey eo- eoc eod eoe eoo eor eou erc erd ere ero err eru ery eu- euc eud eue eur eyc eyd eye eyo eyr oc- occ ocd oco ocr ocu odc odd ode odo odr odu oec oed oee oeo oer oey oo- ooc ood ooo oor or- orc ord ore oro orr oru ory ou- ouc oud oue ouo our oyd oye oyo rcc rcd rce rco rcr rcu rdc rdd rde rdo rdr rdu rdy re- rec red ree reo rer reu rey roc rod roe roo ror rou roy rrc rrd rrr rru ruc rud rue ruo rur ruu ruy ry- ryc ryd rye ryo ryr ryu ryy ucc ucd uce uco ucr ucu udc udd ude udo udr udu uec ued uee uer uey uoc uod uoe uoo uor ur- urc urd ure uro urr uru ury uuc uue uur uuu uyc uyo uyu ycc ycd yce yco ycu ycy yde ydo ydy yec yed yee yeo yer yey yoc yod yoe yoo yor you yoy yrc yre yro yru yud yue yuo yur yuu yuy yyc yye yyu yyy