c-- ccc cch cck ccn cco ch- chc chh chk chn cho ckc ckh cko cn- cnc cnh cnn cno co- coc coh cok con coo hcc hch hck hcn hco hhc hhh hhk hhn hho hkh hkk hkn hko hnc hnh hnk hnn hno hoc hoh hok hon hoo kcc kch kck kcn khh khk khn kho kkc kkh kkk kkn kn- knc knk knn kno koc koh kok kon koo ncc nch nck ncn nco nhc nhh nhk nhn nkc nkk nkn nko nnc nnh nnk nnn nno no- noc noh nok non noo oc- occ och ock ocn oco ohc ohh ohn oho okc okk oko on- onc onh onk onn ono oo- ooc ooh ook oon ooo