-er -ey c-- ccc cce cco ccr ccs cct ccu ce- cec cee ceo cer ces cet ceu cey co- coc coe coo cor cos cot cou coy crc cre cro crr crs crt cru cry csc cse cso csr css cst csu csy ctc cte cto ctr cts ctt ctu cty cuc cue cuo cur cus cut cuu cuy cyc cye cyo cyr cys cyt ec- ecc ece eco ecr ecs ect ecu eec eee eeo eer ees eet eey eo- eoc eoe eoo eor eos eot eou erc ere ero err ers ert eru ery es- esc ese eso esr ess est esu esy etc ete eto etr ets ett etu ety eu- euc eue eur eus eut eyc eye eyo eyr eys eyt oc- occ oco ocr ocs oct ocu oec oee oeo oer oes oet oey oo- ooc ooo oor oos oot or- orc ore oro orr ors ort oru ory os- osc ose oso osr oss ost osu ot- otc ote oto otr ots ott otu ou- ouc oue ouo our ous out oye oyo oys rcc rce rco rcr rcs rct rcu re- rec ree reo rer res ret reu rey roc roe roo ror ros rot rou roy rrc rrr rrs rrt rru rsc rse rso rsr rss rst rsu rtc rte rto rtr rts rtt rtu rty ruc rue ruo rur rus rut ruu ruy ry- ryc rye ryo ryr rys ryu ryy scc sce sco scr scs sct scu se- sec see seo ser ses set seu sey soc soe soo sor sos sot sou soy sr- src sre sro srr srs srt sry ss- ssc sse sso ssr sss sst ssu stc ste sto str sts stt stu sty suc sue suo sur sus sut suu suy sy- syc sye syr sys syt syu tcc tce tco tcr tcs tct tcu te- tec tee teo ter tes tet teu tey to- toc toe too tor tos tot tou toy trc tre tro trr trs trt tru try tsc tse tso tsr tss tst tsu tsy ttc tte tto ttr tts ttt ttu tty tuc tue tuo tur tus tut tuu tuy tyc tye tyo tyr tys tyt ucc uce uco ucr ucs uct ucu uec uee uer ues uet uey uoc uoe uoo uor uos uot ur- urc ure uro urr urs urt uru ury usc use uso usr uss ust usu utc ute uto utr uts utt utu uty uuc uue uur uus uut uuu uyc uyo uys uyu ycc yce yco ycs ycu ycy yec yee yeo yer yes yet yey yoc yoe yoo yor yos yot you yoy yrc yre yro yrs yrt yru ysc yse yso ysr yss yst ysu ysy ytc yte yto ytr yts ytt ytu yue yuo yur yus yut yuu yuy yyc yye yys yyt yyu yyy