c-- ccc cco cct ccu co- coc coo cot cou coy ctc cto ctt ctu cty cuc cuo cut cuu cuy cyc cyo cyt oc- occ oco oct ocu oo- ooc ooo oot ot- otc oto ott otu ou- ouc ouo out oyo tcc tco tct tcu to- toc too tot tou toy ttc tto ttt ttu tty tuc tuo tut tuu tuy tyc tyo tyt ucc uco uct ucu uoc uoo uot utc uto utt utu uty uuc uut uuu uyc uyo uyu ycc yco ycu ycy yoc yoo yot you yoy ytc yto ytt ytu yuo yut yuu yuy yyc yyt yyu yyy