c-- ccc ccd cce ccl ccs ccu ccx cdc cdd cde cdl cds cdu cdx ce- cec ced cee cel ces ceu cex cl- clc cld cle cll cls clu clx csc csd cse csl css csu csx cuc cud cue cul cus cuu cxc cxl cxs cxx dcc dcd dce dcl dcs dcu dcx ddc ddd dde ddl dds ddu ddx de- dec ded dee del des deu dex dl- dlc dld dle dll dls dlu dlx dsc dsd dse dsl dss dsu dsx duc dud due dul dus dux dxc dxd dxl dxs dxx ec- ecc ecd ece ecl ecs ecu ecx ed- edc edd ede edl eds edu edx eec eed eee eel ees eex elc eld ele ell els elu elx es- esc esd ese esl ess esu esx eu- euc eud eue eul eus eux ex- exc exd exe exl exs exu exx lcc lcd lce lcl lcs lcu lcx ldc ldd lde ldl lds ldu lec led lee lel les leu lex llc lld lle lll lls llu lsc lsd lse lsl lss lsu luc lud lue lul lus luu lux lxc lxd lxx scc scd sce scl scs scu scx sdc sdd sde sdl sds sdu se- sec sed see sel ses seu sex slc sld sle sll sls slu slx ss- ssc ssd sse ssl sss ssu ssx suc sud sue sul sus suu sux sxc sxl sxs sxu ucc ucd uce ucl ucs ucu udc udd ude udl uds udu udx uec ued uee uel ues ulc uld ule ull uls ulu usc usd use usl uss usu usx uuc uue uus uuu uxc uxu xcd xcl xcx xdc xde xds xed xee xel xes xeu xex xld xls xsc xsl xss xue xul xus xxl xxx