-ol -th c-- ccc ccd cch ccl cco cct cdc cdd cdh cdl cdo cdt ch- chc chd chh chl cho cht cl- clc cld clh cll clo clt co- coc cod coh col coo cot ctc ctd cth ctl cto ctt dcc dcd dcl dco dct ddc ddd ddh ddl ddo ddt dh- dhc dhd dhh dhl dho dht dl- dlc dld dlh dll dlo dlt doc dod doh dol doo dot dtc dtd dth dtl dto dtt hcc hcd hch hcl hco hct hdc hdd hdh hdl hdo hdt hhc hhd hhh hhl hho hht hlc hld hlh hll hlo hlt hoc hod hoh hol hoo hot htc htd hth htl hto htt lcc lcd lch lcl lco lct ldc ldd ldh ldl ldo ldt lhc lhd lhh lho lht llc lld lll llo llt loc lod loh lol loo lot ltc ltd lth ltl lto ltt oc- occ ocd och ocl oco oct odc odd odh odl odo odt ohc ohd ohh ohl oho oht olc old oll olo olt oo- ooc ood ooh ool ooo oot ot- otc otd oth otl oto ott tcc tcd tch tcl tco tct tdc tdd tdh tdl tdo tdt th- thc thd thh thl tho tht tlc tld tlh tll tlo tlt to- toc tod toh tol too tot ttc ttd tth ttl tto ttt