-ol c-- ccc ccl cco cct ccv cl- clc cll clo clt clv co- coc col coo cot cov ctc ctl cto ctt ctv cvc cvl cvo cvt cvv lcc lcl lco lct lcv llc lll llo llt llv loc lol loo lot lov ltc ltl lto ltt ltv lvc lvl lvt lvv oc- occ ocl oco oct ocv olc oll olo olt oo- ooc ool ooo oot oov ot- otc otl oto ott otv ov- ovc ovl ovo ovv tcc tcl tco tct tcv tlc tll tlo tlt tlv to- toc tol too tot tov ttc ttl tto ttt ttv tvc tvl tvo tvt vcc vcl vco vct vl- vlc vll vlo vlt vlv voc vol voo vot vov vtc vtl vto vtt vtv vvc vvo vvt vvv