-ol c-- ccc cce ccl cco ccs ccv ce- cec cee cel ceo ces cev cl- clc cle cll clo cls clv co- coc coe col coo cos cov csc cse csl cso css csv cvc cve cvl cvo cvs cvv ec- ecc ece ecl eco ecs ecv eec eee eel eeo ees eev elc ele ell elo els elv eo- eoc eoe eol eoo eos es- esc ese esl eso ess esv evc eve evl evo evs evv lcc lce lcl lco lcs lcv lec lee lel leo les lev llc lle lll llo lls llv loc loe lol loo los lov lsc lse lsl lso lss lsv lvc lve lvl lvs lvv oc- occ ocl oco ocs ocv oec oee oel oeo oes olc ole oll olo ols oo- ooc ool ooo oos oov os- osc ose osl oso oss osv ov- ovc ove ovl ovo ovs ovv scc sce scl sco scs scv se- sec see sel seo ses sev slc sle sll slo sls slv soc soe sol soo sos sov ss- ssc sse ssl sso sss ssv svc sve svl svo svs svv v-e vcc vce vcl vco vcs vec vee vel veo ves vl- vlc vle vll vlo vls vlv voc voe vol voo vos vov vsc vse vsl vso vss vsv vvc vvo vvs vvv