cccc cccs ccee ccss cec- cece cecs ceec cees cesc cese cess ceys ceze cezy cscc csce cscs csec csee csse csys cyc- cycc cycs cyse cyy- cyyc czyz eccc ecce eces ecsc ecse ecss eecs eeee eees eese eesy eeze esce escs esee eses esse essy eyec eyes eyey eyez eyse sccc scce sccs sccy scec scee scey scsc scye se-c se-e se-s se-y se-z sec- secc sece secs secy seec sees seey seez sesc sese sess seye seys sscc ssce sscs ssec ssee sses sssc ssss syce syes syse syss szss yccc ycee yees yess yeye ysee yses ysse yyyy zees zeze zsss zzzs zzzz