-er -th c-- ccc cce cch cck ccr ccs cct ce- cec cee ceh cek cer ces cet ch- chc che chh chk chr chs cht ckc ckh cks ckt crc cre crh crk crr crs crt csc cse csh csk csr css cst ctc cte cth ctk ctr cts ctt ec- ecc ece ech eck ecr ecs ect eec eee eek eer ees eet ehc ehe ehh ehr ehs eht ekc eke ekh ekr eks ekt erc ere erh erk err ers ert es- esc ese esh esk esr ess est etc ete eth etk etr ets ett hcc hce hch hck hcr hcs hct he- hec hee heh hek her hes het hhc hhe hhh hhk hhr hhs hht hkh hkk hkr hks hkt hr- hrc hre hrh hrk hrr hrs hrt hsc hse hsh hsk hsr hss hst htc hte hth htk htr hts htt k-t kcc kce kch kck kcr kcs kct ke- kec kee keh kek ker kes ket khe khh khk khr khs kkc kke kkh kkk kkr kks kkt krc krk krr krs krt ksc kse ksh ksk ksr kss kst ktc kte kth ktk ktr kts ktt rcc rce rch rcr rcs rct re- rec ree reh rek rer res ret rh- rhc rhe rhh rhr rhs rht rkc rke rkk rks rkt rrc rrh rrk rrr rrs rrt rsc rse rsh rsk rsr rss rst rtc rte rtk rtr rts rtt scc sce sch sck scr scs sct se- sec see seh sek ser ses set sh- shc she shh shk shr shs sht sk- skc ske skh skk skr sks skt sr- src sre srh srk srr srs srt ss- ssc sse ssh ssk ssr sss sst stc ste sth stk str sts stt tcc tce tch tck tcr tcs tct te- tec tee teh tek ter tes tet th- thc the thh thk thr ths tht tkc tke tkk tkr tks tkt trc tre trh trk trr trs trt tsc tse tsh tsk tsr tss tst ttc tte tth ttk ttr tts ttt