-ol -th c-- ccc cch ccl cco cct ch- chc chh chl cho cht cl- clc clh cll clo clt co- coc coh col coo cot ctc cth ctl cto ctt hcc hch hcl hco hct hhc hhh hhl hho hht hlc hlh hll hlo hlt hoc hoh hol hoo hot htc hth htl hto htt lcc lch lcl lco lct lhc lhh lho lht llc lll llo llt loc loh lol loo lot ltc lth ltl lto ltt oc- occ och ocl oco oct ohc ohh ohl oho oht olc oll olo olt oo- ooc ooh ool ooo oot ot- otc oth otl oto ott tcc tch tcl tco tct th- thc thh thl tho tht tlc tlh tll tlo tlt to- toc toh tol too tot ttc tth ttl tto ttt