-ol c-- ccc ccl ccn cco cct cl- clc cll cln clo clt cn- cnc cnl cnn cno cnt co- coc col con coo cot ctc ctl ctn cto ctt lcc lcl lcn lco lct llc lll lln llo llt lnc lnl lnn lno lnt loc lol lon loo lot ltc ltl lto ltt ncc ncl ncn nco nct nlc nll nln nlo nlt nnc nnl nnn nno nnt no- noc nol non noo not ntc ntn nto ntt oc- occ ocl ocn oco oct olc oll oln olo olt on- onc onl onn ono ont oo- ooc ool oon ooo oot ot- otc otl otn oto ott tcc tcl tcn tco tct tlc tll tln tlo tlt tnc tnl tnn tno tnt to- toc tol ton too tot ttc ttl ttn tto ttt