-er c-- ccc cce cch cck ccl ccr ccs ce- cec cee ceh cek cel cer ces ch- chc che chh chk chl chr chs ckc ckh cks cl- clc cle clh clk cll clr cls crc cre crh crk crl crr crs csc cse csh csk csl csr css ec- ecc ece ech eck ecl ecr ecs eec eee eek eel eer ees ehc ehe ehh ehl ehr ehs ekc eke ekh ekl ekr eks elc ele elh elk ell elr els erc ere erh erk erl err ers es- esc ese esh esk esl esr ess hcc hce hch hck hcl hcr hcs he- hec hee heh hek hel her hes hhc hhe hhh hhk hhl hhr hhs hkh hkk hkl hkr hks hlc hle hlh hll hlr hls hr- hrc hre hrh hrk hrl hrr hrs hsc hse hsh hsk hsl hsr hss kcc kce kch kck kcl kcr kcs ke- kec kee keh kek kel ker kes khe khh khk khr khs kkc kke kkh kkk kkl kkr kks kl- klc klh klr kls krc krk krl krr krs ksc kse ksh ksk ksl ksr kss lcc lce lch lck lcl lcr lcs lec lee leh lek lel ler les lhc lhh lhk lhr lhs lkh lkl lkr lks llc lle llk lll llr lls lrc lrh lrk lrr lrs lsc lse lsh lsk lsl lsr lss rcc rce rch rcl rcr rcs re- rec ree reh rek rel rer res rh- rhc rhe rhh rhl rhr rhs rkc rke rkk rks rlc rle rlh rll rlr rls rrc rrh rrk rrl rrr rrs rsc rse rsh rsk rsl rsr rss scc sce sch sck scl scr scs se- sec see seh sek sel ser ses sh- shc she shh shk shl shr shs sk- skc ske skh skk skl skr sks slc sle slh slk sll slr sls sr- src sre srh srk srl srr srs ss- ssc sse ssh ssk ssl ssr sss