c-- ccc ccd ccr ccu ccx cdc cdd cdr cdu cdx cdy crc crd crr cru crx cry cuc cud cur cuu cuy cxc cxr cxx cyc cyd cyr dcc dcd dcr dcu dcx ddc ddd ddr ddu ddx ddy drc drd drr dru drx dry duc dud dur dux duy dxc dxd dxr dxx dy- dyc dyd dyr dyu dyy rcc rcd rcr rcu rcx rdc rdd rdr rdu rdx rdy rrc rrd rrr rru ruc rud rur ruu rux ruy rxr ry- ryc ryd ryr ryu ryy ucc ucd ucr ucu udc udd udr udu udx ur- urc urd urr uru urx ury uuc uur uuu uxc uxr uxu uyc uyu xcd xcr xcx xdc xdr xrc xrd xrx xry xxx xxy xyr xyy ycc ycd ycu ycy ydy yrc yru yud yur yuu yux yuy yxy yyc yyu yyy