-er -ey c-- ccc ccd cce ccn cco ccr cdc cdd cde cdn cdo cdr cdy ce- cec ced cee cen ceo cer cey cn- cnc cnd cne cnn cno cnr cny co- coc cod coe con coo cor coy crc crd cre crn cro crr cry cyc cyd cye cyn cyo cyr dcc dcd dce dcn dco dcr ddc ddd dde ddn ddo ddr ddy de- dec ded dee den deo der dey dnc dnd dne dnn dno dnr dny doc dod doe don doo dor doy drc drd dre drn dro drr dry dy- dyc dyd dye dyn dyo dyr dyy ec- ecc ecd ece ecn eco ecr ed- edc edd ede edn edo edr edy eec eed eee een eeo eer eey en- enc end ene enn eno enr eny eo- eoc eod eoe eon eoo eor erc erd ere ern ero err ery eyc eyd eye eyn eyo eyr ncc ncd nce ncn nco ncr ndc ndd nde ndn ndo ndr ndy ne- nec ned nee nen neo ner ney nnc nne nnn nno no- noc nod noe non noo nor noy nrc nrd nre nrn nro nrr nry nyc nyd nye nyn nyo nyy oc- occ ocd ocn oco ocr odc odd ode odn odo odr oec oed oee oen oeo oer oey on- onc ond one onn ono onr ony oo- ooc ood oon ooo oor or- orc ord ore orn oro orr ory oyd oye oyo rcc rcd rce rcn rco rcr rdc rdd rde rdn rdo rdr rdy re- rec red ree ren reo rer rey rnc rnd rnn rno rnr rny roc rod roe ron roo ror roy rrc rrd rrn rrr ry- ryc ryd rye ryn ryo ryr ryy ycc ycd yce yco ycy yde ydn ydo ydy yec yed yee yen yeo yer yey ynd yne ynn yny yoc yod yoe yon yoo yor yoy yrc yre yrn yro yyc yye yyy