c-- ccc ccd cce ccl ccu ccx cdc cdd cde cdl cdu cdx ce- cec ced cee cel ceu cex cl- clc cld cle cll clu clx cuc cud cue cul cuu cxc cxl cxx dcc dcd dce dcl dcu dcx ddc ddd dde ddl ddu ddx de- dec ded dee del deu dex dl- dlc dld dle dll dlu dlx duc dud due dul dux dxc dxd dxl dxx ec- ecc ecd ece ecl ecu ecx ed- edc edd ede edl edu edx eec eed eee eel eex elc eld ele ell elu elx eu- euc eud eue eul eux ex- exc exd exe exl exu exx lcc lcd lce lcl lcu lcx ldc ldd lde ldl ldu lec led lee lel leu lex llc lld lle lll llu luc lud lue lul luu lux lxc lxd lxx ucc ucd uce ucl ucu udc udd ude udl udu udx uec ued uee uel ulc uld ule ull ulu uuc uue uuu uxc uxu xcd xcl xcx xdc xde xed xee xel xeu xex xld xue xul xxl xxx