-ol -th c-- ccc cch cck ccl cco ccs cct ch- chc chh chk chl cho chs cht ckc ckh cko cks ckt cl- clc clh clk cll clo cls clt co- coc coh cok col coo cos cot csc csh csk csl cso css cst ctc cth ctk ctl cto cts ctt hcc hch hck hcl hco hcs hct hhc hhh hhk hhl hho hhs hht hkh hkk hkl hko hks hkt hlc hlh hll hlo hls hlt hoc hoh hok hol hoo hos hot hsc hsh hsk hsl hss hst htc hth htk htl hto hts htt k-t kcc kch kck kcl kcs kct khh khk kho khs kkc kkh kkk kkl kks kkt kl- klc klh klo kls klt koc koh kok kol koo kos kot ksc ksh ksk ksl kso kss kst ktc kth ktk ktl kto kts ktt lcc lch lck lcl lco lcs lct lhc lhh lhk lho lhs lht lkh lkl lks lkt llc llk lll llo lls llt loc loh lok lol loo los lot lsc lsh lsk lsl lso lss lst ltc lth ltk ltl lto lts ltt oc- occ och ock ocl oco ocs oct ohc ohh ohl oho ohs oht okc okk okl oko oks olc olk oll olo ols olt oo- ooc ooh ook ool ooo oos oot os- osc osh osk osl oso oss ost ot- otc oth otk otl oto ots ott scc sch sck scl sco scs sct sh- shc shh shk shl sho shs sht sk- skc skh skk skl sko sks skt slc slh slk sll slo sls slt soc soh sok sol soo sos sot ss- ssc ssh ssk ssl sso sss sst stc sth stk stl sto sts stt tcc tch tck tcl tco tcs tct th- thc thh thk thl tho ths tht tkc tkk tkl tko tks tkt tlc tlh tlk tll tlo tls tlt to- toc toh tok tol too tos tot tsc tsh tsk tsl tso tss tst ttc tth ttk ttl tto tts ttt