c-- ccc ccf cco ccr ccu cfc cff cfo cfr cfu co- coc cof coo cor cou coy crc crf cro crr cru cry cuc cuf cuo cur cuu cuy cyc cyf cyo cyr fcc fcf fco fcr fcu fcy ffc fff ffo ffr ffu ffy foc fof foo for fou foy frc frf fro frr fru fry fuf fuo fur fuu fy- fyc fyo oc- occ ocf oco ocr ocu of- ofc off ofo ofr ofu oo- ooc oof ooo oor or- orc orf oro orr oru ory ou- ouc ouf ouo our oyo rcc rcf rco rcr rcu rfc rff rfo rfr rfu roc rof roo ror rou roy rrc rrf rrr rru ruc ruf ruo rur ruu ruy ry- ryc ryf ryo ryr ryu ryy ucc ucf uco ucr ucu ufc uff ufo ufr ufu uoc uoo uor ur- urc urf uro urr uru ury uuc uur uuu uyc uyo uyu ycc ycf yco ycu ycy yfc yff yfr yfu yoc yof yoo yor you yoy yrc yrf yro yru yuo yur yuu yuy yyc yyf yyu yyy