-th a-a a-c a-t aaa aac aah aak aat aax ac- aca acc ach ack act acx aha ahc ahh ahk aht ahx aka akc akh akk at- ata atc ath att atx ax- axa axh axk axt axx c-- caa cac cah cak cat cax cca ccc cch cck cct ccx ch- cha chc chh chk cht chx cka ckc ckh ckt ckx cta ctc cth ctk ctt ctx cxc cxh cxk cxt cxx haa hac hah hak hat hax hca hcc hch hck hct hha hhc hhh hhk hht hka hkh hkk hkt hta htc hth htk htt htx hxc k-t ka- kaa kac kah kak kat kax kca kcc kch kck kct kcx kha khh khk kkc kkh kkk kkt kta ktc kth ktk ktt t-x taa tac tah tak tat tax tca tcc tch tck tct tcx th- tha thc thh thk tht thx tka tkc tkk tkt tta ttc tth ttk ttt ttx txk txt xaa xac xak xat xch xcx xht xtc xtx xxx