-th c-- ccc cch cck cco ccp ccs cct ch- chc chh chk cho chp chs cht ckc ckh cko cks ckt co- coc coh cok coo cop cos cot cpc cph cpk cpo cpp cps cpt csc csh csk cso csp css cst ctc cth ctk cto ctp cts ctt hcc hch hck hco hcp hcs hct hhc hhh hhk hho hhp hhs hht hkh hkk hko hkp hks hkt hoc hoh hok hoo hop hos hot hpc hph hpk hpo hpp hps hpt hsc hsh hsk hsp hss hst htc hth htk hto htp hts htt k-t kcc kch kck kcp kcs kct khh khk kho khs kkc kkh kkk kkp kks kkt koc koh kok koo kop kos kot kpc kph kpk kpo kpp kps kpt ksc ksh ksk kso ksp kss kst ktc kth ktk kto ktp kts ktt oc- occ och ock oco ocp ocs oct ohc ohh oho ohp ohs oht okc okk oko okp oks oo- ooc ooh ook ooo oop oos oot op- opc oph opk opo opp ops opt os- osc osh osk oso osp oss ost ot- otc oth otk oto otp ots ott p-p pcc pch pck pco pcp pcs pct phc phk pho php phs pht pkc pko pkp pks pkt poc poh pok poo pop pos pot ppc pph ppk ppo ppp pps ppt ps- psc psh psk pso psp pss pst pt- ptc pth ptk pto ptp pts ptt scc sch sck sco scp scs sct sh- shc shh shk sho shp shs sht sk- skc skh skk sko skp sks skt soc soh sok soo sop sos sot spc sph spk spo spp sps spt ss- ssc ssh ssk sso ssp sss sst stc sth stk sto stp sts stt tcc tch tck tco tcp tcs tct th- thc thh thk tho thp ths tht tkc tkk tko tkp tks tkt to- toc toh tok too top tos tot tpc tph tpk tpo tpp tps tpt tsc tsh tsk tso tsp tss tst ttc tth ttk tto ttp tts ttt