-ol c-- ccc cce cch ccl cco ccs ce- cec cee ceh cel ceo ces ch- chc che chh chl cho chs cl- clc cle clh cll clo cls co- coc coe coh col coo cos csc cse csh csl cso css ec- ecc ece ech ecl eco ecs eec eee eel eeo ees ehc ehe ehh ehl eho ehs elc ele elh ell elo els eo- eoc eoe eoh eol eoo eos es- esc ese esh esl eso ess hcc hce hch hcl hco hcs he- hec hee heh hel heo hes hhc hhe hhh hhl hho hhs hlc hle hlh hll hlo hls hoc hoe hoh hol hoo hos hsc hse hsh hsl hss lcc lce lch lcl lco lcs lec lee leh lel leo les lhc lhh lho lhs llc lle lll llo lls loc loe loh lol loo los lsc lse lsh lsl lso lss oc- occ och ocl oco ocs oec oee oeh oel oeo oes ohc ohe ohh ohl oho ohs olc ole oll olo ols oo- ooc ooh ool ooo oos os- osc ose osh osl oso oss scc sce sch scl sco scs se- sec see seh sel seo ses sh- shc she shh shl sho shs slc sle slh sll slo sls soc soe soh sol soo sos ss- ssc sse ssh ssl sso sss