-er -ey c-- ccc cce ccr cct ccu ce- cec cee cer cet ceu cey crc cre crr crt cru cry ctc cte ctr ctt ctu cty cuc cue cur cut cuu cuy cyc cye cyr cyt ec- ecc ece ecr ect ecu eec eee eer eet eey erc ere err ert eru ery etc ete etr ett etu ety eu- euc eue eur eut eyc eye eyr eyt rcc rce rcr rct rcu re- rec ree rer ret reu rey rrc rrr rrt rru rtc rte rtr rtt rtu rty ruc rue rur rut ruu ruy ry- ryc rye ryr ryu ryy tcc tce tcr tct tcu te- tec tee ter tet teu tey trc tre trr trt tru try ttc tte ttr ttt ttu tty tuc tue tur tut tuu tuy tyc tye tyr tyt ucc uce ucr uct ucu uec uee uer uet uey ur- urc ure urr urt uru ury utc ute utr utt utu uty uuc uue uur uut uuu uyc uyu ycc yce ycu ycy yec yee yer yet yey yrc yre yrt yru ytc yte ytr ytt ytu yue yur yut yuu yuy yyc yye yyt yyu yyy