-th c-- ccc cch cco ccr ccs cct ch- chc chh cho chr chs cht co- coc coh coo cor cos cot crc crh cro crr crs crt csc csh cso csr css cst ctc cth cto ctr cts ctt hcc hch hco hcr hcs hct hhc hhh hho hhr hhs hht hoc hoh hoo hor hos hot hr- hrc hrh hro hrr hrs hrt hsc hsh hsr hss hst htc hth hto htr hts htt oc- occ och oco ocr ocs oct ohc ohh oho ohr ohs oht oo- ooc ooh ooo oor oos oot or- orc orh oro orr ors ort os- osc osh oso osr oss ost ot- otc oth oto otr ots ott rcc rch rco rcr rcs rct rh- rhc rhh rho rhr rhs rht roc roh roo ror ros rot rrc rrh rrr rrs rrt rsc rsh rso rsr rss rst rtc rto rtr rts rtt scc sch sco scr scs sct sh- shc shh sho shr shs sht soc soh soo sor sos sot sr- src srh sro srr srs srt ss- ssc ssh sso ssr sss sst stc sth sto str sts stt tcc tch tco tcr tcs tct th- thc thh tho thr ths tht to- toc toh too tor tos tot trc trh tro trr trs trt tsc tsh tso tsr tss tst ttc tth tto ttr tts ttt