-th c-- ccc cch ccr ccs cct ch- chc chh chr chs cht crc crh crr crs crt csc csh csr css cst ctc cth ctr cts ctt hcc hch hcr hcs hct hhc hhh hhr hhs hht hr- hrc hrh hrr hrs hrt hsc hsh hsr hss hst htc hth htr hts htt rcc rch rcr rcs rct rh- rhc rhh rhr rhs rht rrc rrh rrr rrs rrt rsc rsh rsr rss rst rtc rtr rts rtt scc sch scr scs sct sh- shc shh shr shs sht sr- src srh srr srs srt ss- ssc ssh ssr sss sst stc sth str sts stt tcc tch tcr tcs tct th- thc thh thr ths tht trc trh trr trs trt tsc tsh tsr tss tst ttc tth ttr tts ttt