-up c-- ccc cco ccp ccr ccu co- coc coo cop cor cou coy cpc cpo cpp cpr cpu crc cro crp crr cru cry cuc cuo cup cur cuu cuy cyc cyo cyp cyr oc- occ oco ocp ocr ocu oo- ooc ooo oop oor op- opc opo opp opr opy or- orc oro orp orr oru ory ou- ouc ouo oup our oyo p-p pcc pco pcp pcr pcu poc poo pop por pou poy ppc ppo ppp ppr ppu prc pro prp prr pru pry puc pup pur puu puy py- pyc pyo pyr pyu rcc rco rcp rcr rcu roc roo rop ror rou roy rpc rpo rpp rpr rpu rrc rrp rrr rru ruc ruo rup rur ruu ruy ry- ryc ryo ryr ryu ryy ucc uco ucp ucr ucu uoc uoo uop uor up- upc upo upp upr upu ur- urc uro urp urr uru ury uuc uur uuu uyc uyo uyu ycc yco ycp ycu ycy yoc yoo yop yor you yoy ypo ypu yrc yro yrp yru yuo yup yur yuu yuy yyc yyu yyy