-th c-- ccc cch cck cco cct ch- chc chh chk cho cht chy ckc ckh cko ckt cky co- coc coh cok coo cot coy ctc cth ctk cto ctt cty cyc cyk cyo cyt hcc hch hck hco hct hcy hhc hhh hhk hho hht hhy hkh hkk hko hkt hoc hoh hok hoo hot hoy htc hth htk hto htt hty hy- hyc hyh hyo hyt hyy k-t kcc kch kck kct khh khk kho kkc kkh kkk kkt kky koc koh kok koo kot koy ktc kth ktk kto ktt kyc kyo kyt oc- occ och ock oco oct ohc ohh oho oht okc okk oko oo- ooc ooh ook ooo oot ot- otc oth otk oto ott oyo tcc tch tck tco tct th- thc thh thk tho tht thy tkc tkk tko tkt tky to- toc toh tok too tot toy ttc tth ttk tto ttt tty tyc tyo tyt ycc ych yco ycy yhc yht ykk yoc yok yoo yot yoy ytc yth ytk yto ytt yyc yyt yyy