-er c-- ccc cce cch ccl ccr ccs ce- cec cee ceh cel cer ces ch- chc che chh chl chr chs cl- clc cle clh cll clr cls crc cre crh crl crr crs csc cse csh csl csr css ec- ecc ece ech ecl ecr ecs eec eee eel eer ees ehc ehe ehh ehl ehr ehs elc ele elh ell elr els erc ere erh erl err ers es- esc ese esh esl esr ess hcc hce hch hcl hcr hcs he- hec hee heh hel her hes hhc hhe hhh hhl hhr hhs hlc hle hlh hll hlr hls hr- hrc hre hrh hrl hrr hrs hsc hse hsh hsl hsr hss lcc lce lch lcl lcr lcs lec lee leh lel ler les lhc lhh lhr lhs llc lle lll llr lls lrc lrh lrr lrs lsc lse lsh lsl lsr lss rcc rce rch rcl rcr rcs re- rec ree reh rel rer res rh- rhc rhe rhh rhl rhr rhs rlc rle rlh rll rlr rls rrc rrh rrl rrr rrs rsc rse rsh rsl rsr rss scc sce sch scl scr scs se- sec see seh sel ser ses sh- shc she shh shl shr shs slc sle slh sll slr sls sr- src sre srh srl srr srs ss- ssc sse ssh ssl ssr sss