-th c-- ccc cch ccs cct ccu ch- chc chh chs cht chu csc csh css cst csu ctc cth cts ctt ctu cuc cuh cus cut cuu hcc hch hcs hct hhc hhh hhs hht hhu hsc hsh hss hst hsu htc hth hts htt huc huh hus hut huu scc sch scs sct scu sh- shc shh shs sht shu ss- ssc ssh sss sst ssu stc sth sts stt stu suc suh sus sut suu tcc tch tcs tct tcu th- thc thh ths tht thu tsc tsh tss tst tsu ttc tth tts ttt ttu tuc tuh tus tut tuu ucc uch ucs uct ucu uhc uhh uhs uht uhu usc ush uss ust usu utc uth uts utt utu uuc uus uut uuu