c-- ccc cch cck ccn cco ch- chc chh chk chn cho chy ckc ckh cko cky cn- cnc cnh cnn cno cny co- coc coh cok con coo coy cyc cyk cyn cyo hcc hch hck hcn hco hcy hhc hhh hhk hhn hho hhy hkh hkk hkn hko hnc hnh hnk hnn hno hny hoc hoh hok hon hoo hoy hy- hyc hyh hyn hyo hyy kcc kch kck kcn khh khk khn kho kkc kkh kkk kkn kky kn- knc knk knn kno koc koh kok kon koo koy kyc kyn kyo ncc nch nck ncn nco nhc nhh nhk nhn nhy nkc nkk nkn nko nky nnc nnh nnk nnn nno no- noc noh nok non noo noy nyc nyk nyn nyo nyy oc- occ och ock ocn oco ohc ohh ohn oho okc okk oko on- onc onh onk onn ono ony oo- ooc ooh ook oon ooo oyo ycc ych yco ycy yhc ykk ykn ynk ynn yny yoc yok yon yoo yoy yyc yyy