-er c-- ccc cce cco ccr ccs cct ccu ce- cec cee ceo ceq cer ces cet ceu co- coc coe coo coq cor cos cot cou cqc cqo cqs cqt crc cre cro crq crr crs crt cru csc cse cso csq csr css cst csu ctc cte cto ctq ctr cts ctt ctu cuc cue cuo cuq cur cus cut cuu ec- ecc ece eco ecq ecr ecs ect ecu eec eee eeo eer ees eet eo- eoc eoe eoo eoq eor eos eot eou eqe eqq eqs eqt equ erc ere ero erq err ers ert eru es- esc ese eso esq esr ess est esu etc ete eto etr ets ett etu eu- euc eue eur eus eut oc- occ oco ocr ocs oct ocu oec oee oeo oer oes oet oo- ooc ooo oor oos oot oqo or- orc ore oro orr ors ort oru os- osc ose oso osq osr oss ost osu ot- otc ote oto otr ots ott otu ou- ouc oue ouo our ous out qcc qco qcs qct qec qee qeo qet qoo qor qos qqq qqu qrc qre qrs qrt qru qsc qso qsr qst qtc qto qtq qtr qts qu- que quo qur qus qut rcc rce rco rcr rcs rct rcu re- rec ree reo req rer res ret reu roc roe roo ror ros rot rou rqc rqs rrc rrq rrr rrs rrt rru rsc rse rso rsq rsr rss rst rsu rtc rte rto rtq rtr rts rtt rtu ruc rue ruo rur rus rut ruu scc sce sco scr scs sct scu se- sec see seo seq ser ses set seu soc soe soo soq sor sos sot sou sqq sqr sqs sr- src sre sro srq srr srs srt ss- ssc sse sso ssq ssr sss sst ssu stc ste sto stq str sts stt stu suc sue suo suq sur sus sut suu tcc tce tco tcr tcs tct tcu te- tec tee teo teq ter tes tet teu to- toc toe too toq tor tos tot tou tqo trc tre tro trq trr trs trt tru tsc tse tso tsq tsr tss tst tsu ttc tte tto ttr tts ttt ttu tuc tue tuo tur tus tut tuu ucc uce uco ucr ucs uct ucu uec uee uer ues uet uoc uoe uoo uor uos uot ur- urc ure uro urr urs urt uru usc use uso usr uss ust usu utc ute uto utr uts utt utu uuc uue uur uus uut uuu