-ol c-- ccc cce cch cck ccl cco ccs ce- cec cee ceh cek cel ceo ces ch- chc che chh chk chl cho chs ckc ckh cko cks cl- clc cle clh clk cll clo cls co- coc coe coh cok col coo cos csc cse csh csk csl cso css ec- ecc ece ech eck ecl eco ecs eec eee eek eel eeo ees ehc ehe ehh ehl eho ehs ekc eke ekh ekl eko eks elc ele elh elk ell elo els eo- eoc eoe eoh eok eol eoo eos es- esc ese esh esk esl eso ess hcc hce hch hck hcl hco hcs he- hec hee heh hek hel heo hes hhc hhe hhh hhk hhl hho hhs hkh hkk hkl hko hks hlc hle hlh hll hlo hls hoc hoe hoh hok hol hoo hos hsc hse hsh hsk hsl hss kcc kce kch kck kcl kcs ke- kec kee keh kek kel keo kes khe khh khk kho khs kkc kke kkh kkk kkl kks kl- klc klh klo kls koc koe koh kok kol koo kos ksc kse ksh ksk ksl kso kss lcc lce lch lck lcl lco lcs lec lee leh lek lel leo les lhc lhh lhk lho lhs lkh lkl lks llc lle llk lll llo lls loc loe loh lok lol loo los lsc lse lsh lsk lsl lso lss oc- occ och ock ocl oco ocs oec oee oeh oel oeo oes ohc ohe ohh ohl oho ohs okc oke okk okl oko oks olc ole olk oll olo ols oo- ooc ooh ook ool ooo oos os- osc ose osh osk osl oso oss scc sce sch sck scl sco scs se- sec see seh sek sel seo ses sh- shc she shh shk shl sho shs sk- skc ske skh skk skl sko sks slc sle slh slk sll slo sls soc soe soh sok sol soo sos ss- ssc sse ssh ssk ssl sso sss