c-- ccc cco ccr ccu co- coc coo coq cor cou coy cqc cqo crc cro crq crr cru cry cuc cuo cuq cur cuu cuy cyc cyo cyr oc- occ oco ocr ocu oo- ooc ooo oor oqo or- orc oro orr oru ory ou- ouc ouo our oyo qcc qco qoo qor qqq qqu qrc qru qu- quo qur quy rcc rco rcr rcu roc roo ror rou roy rqc rrc rrq rrr rru ruc ruo rur ruu ruy ry- ryc ryo ryr ryu ryy ucc uco ucr ucu uoc uoo uor ur- urc uro urr uru ury uuc uur uuu uyc uyo uyu ycc yco ycu ycy yoc yoo yor you yoy yqr yrc yro yru yuo yur yuu yuy yyc yyu yyy