-er c-- c-j ccc cce ccj cck cco ccr ccs cct ce- cec cee cej cek ceo cer ces cet cjc cjk cjr cjs ckc cko cks ckt co- coc coe coj cok coo cor cos cot crc cre crj crk cro crr crs crt csc cse csj csk cso csr css cst ctc cte ctk cto ctr cts ctt ec- ecc ece ecj eck eco ecr ecs ect eec eee eek eeo eer ees eet ejc ejo ejt ekc eke eko ekr eks ekt eo- eoc eoe eok eoo eor eos eot erc ere erk ero err ers ert es- esc ese esk eso esr ess est etc ete etj etk eto etr ets ett jcc jce jck jco jcr jcs jct jec jee jej jek jeo jer jes jet jjc jjj jjk jjr jjs jkk jko jkr jks jkt joc joe joj jok joo jor jos jot jrc jrk jro jrr jrs jrt jsc jse jsj jsk jso jsr jss jst jtc jte jtk jtr jts jtt k-t kcc kce kck kcr kcs kct ke- kec kee kek keo ker kes ket kjc kje kjr kjs kkc kke kkk kkr kks kkt koc koe kok koo kor kos kot krc krk kro krr krs krt ksc kse ksk kso ksr kss kst ktc kte ktj ktk kto ktr kts ktt oc- occ ocj ock oco ocr ocs oct oec oee oeo oer oes oet ojc oje ojo ojs okc oke okj okk oko okr oks oo- ooc ook ooo oor oos oot or- orc ore ork oro orr ors ort os- osc ose osj osk oso osr oss ost ot- otc ote otk oto otr ots ott rcc rce rcj rco rcr rcs rct re- rec ree rek reo rer res ret rjc rjk rjr rkc rke rkk rko rks rkt roc roe roj rok roo ror ros rot rrc rrk rrr rrs rrt rsc rse rsj rsk rso rsr rss rst rtc rte rtj rtk rto rtr rts rtt scc sce scj sck sco scr scs sct se- sec see sej sek seo ser ses set sjc sje sjj sjk sjr sjs sjt sk- skc ske skj skk sko skr sks skt soc soe soj sok soo sor sos sot sr- src sre srj srk sro srr srs srt ss- ssc sse ssj ssk sso ssr sss sst stc ste stj stk sto str sts stt tcc tce tcj tck tco tcr tcs tct te- tec tee tej tek teo ter tes tet tjc tje tjo tjr tjs tkc tke tkk tko tkr tks tkt to- toc toe toj tok too tor tos tot trc tre trk tro trr trs trt tsc tse tsj tsk tso tsr tss tst ttc tte ttk tto ttr tts ttt