c-- ccc cch cck ccs ccu ch- chc chh chk chs chu ckc ckh cks csc csh csk css csu cuc cuh cuk cus cuu hcc hch hck hcs hhc hhh hhk hhs hhu hkh hkk hks hku hsc hsh hsk hss hsu huc huh huk hus huu kcc kch kck kcs kcu khh khk khs khu kkc kkh kkk kks kku ksc ksh ksk kss ksu kuc kuh kuk kus kuu scc sch sck scs scu sh- shc shh shk shs shu sk- skc skh skk sks sku ss- ssc ssh ssk sss ssu suc suh suk sus suu ucc uch uck ucs ucu uhc uhh uhs uhu ukc ukk uku usc ush usk uss usu uuc uus uuu