c-- ccc ccr ccs ccu ccv crc crr crs cru crv cry csc csr css csu csv csy cuc cur cus cuu cuv cuy cvc cvr cvs cvu cvv cyc cyr cys rcc rcr rcs rcu rcv rrc rrr rrs rru rsc rsr rss rsu rsv ruc rur rus ruu ruv ruy rvc rvr rvs rvu rvv rvy ry- ryc ryr rys ryu ryy scc scr scs scu scv sr- src srr srs srv sry ss- ssc ssr sss ssu ssv suc sur sus suu suv suy svc svr svs svu svv svy sy- syc syr sys syu ucc ucr ucs ucu ucv ur- urc urr urs uru ury usc usr uss usu usv uuc uur uus uuu uvc uvs uvu uvv uyc uys uyu vcc vcr vcs vcu vcy vrc vrr vrs vru vry vsc vsr vss vsu vsv vur vus vuv vvc vvr vvs vvv ycc ycs ycu ycv ycy yrc yrs yru ysc ysr yss ysu ysy yur yus yuu yuv yuy yvr yvy yyc yys yyu yyy