-th c-- ccc cce cch cck cco cct ce- cec cee ceh cek ceo cet ch- chc che chh chk cho cht ckc ckh cko ckt co- coc coe coh cok coo cot ctc cte cth ctk cto ctt ec- ecc ece ech eck eco ect eec eee eek eeo eet ehc ehe ehh eho eht ekc eke ekh eko ekt eo- eoc eoe eoh eok eoo eot etc ete eth etk eto ett hcc hce hch hck hco hct he- hec hee heh hek heo het hhc hhe hhh hhk hho hht hkh hkk hko hkt hoc hoe hoh hok hoo hot htc hte hth htk hto htt k-t kcc kce kch kck kct ke- kec kee keh kek keo ket khe khh khk kho kkc kke kkh kkk kkt koc koe koh kok koo kot ktc kte kth ktk kto ktt oc- occ och ock oco oct oec oee oeh oeo oet ohc ohe ohh oho oht okc oke okk oko oo- ooc ooh ook ooo oot ot- otc ote oth otk oto ott tcc tce tch tck tco tct te- tec tee teh tek teo tet th- thc the thh thk tho tht tkc tke tkk tko tkt to- toc toe toh tok too tot ttc tte tth ttk tto ttt