-th c-- ccc cch cco ccs cct ch- chc chh cho chs cht chy co- coc coh coo cos cot coy csc csh cso css cst csy ctc cth cto cts ctt cty cyc cyo cys cyt hcc hch hco hcs hct hcy hhc hhh hho hhs hht hhy hoc hoh hoo hos hot hoy hsc hsh hss hst hsy htc hth hto hts htt hty hy- hyc hyh hyo hys hyt hyy oc- occ och oco ocs oct ohc ohh oho ohs oht oo- ooc ooh ooo oos oot os- osc osh oso oss ost ot- otc oth oto ots ott oyo oys scc sch sco scs sct sh- shc shh sho shs sht shy soc soh soo sos sot soy ss- ssc ssh sso sss sst stc sth sto sts stt sty sy- syc syh sys syt tcc tch tco tcs tct th- thc thh tho ths tht thy to- toc toh too tos tot toy tsc tsh tso tss tst tsy ttc tth tto tts ttt tty tyc tyo tys tyt ycc ych yco ycs ycy yhc yhs yht yoc yoo yos yot yoy ysc yso yss yst ysy ytc yth yto yts ytt yyc yys yyt yyy