b-u bbb bbc bbd bbe bbl bbu bbx bcb bcc bcd bce bcl bcu bcx bdb bdc bdd bde bdl bdu bdx be- beb bec bed bee bel beu bex blb blc bld ble bll blu blx bub buc bud bue bul buu bux bxb bxd bxl bxx c-- cbb cbc cbd cbe cbl cbu cbx ccb ccc ccd cce ccl ccu ccx cdb cdc cdd cde cdl cdu cdx ce- ceb cec ced cee cel ceu cex cl- clb clc cld cle cll clu clx cub cuc cud cue cul cuu cxc cxl cxx dbb dbc dbd dbe dbl dbu dbx dcb dcc dcd dce dcl dcu dcx ddb ddc ddd dde ddl ddu ddx de- deb dec ded dee del deu dex dl- dlb dlc dld dle dll dlu dlx dub duc dud due dul dux dxc dxd dxl dxx ebb ebc ebd ebe ebl ebu ebx ec- ecb ecc ecd ece ecl ecu ecx ed- edb edc edd ede edl edu edx eeb eec eed eee eel eex elb elc eld ele ell elu elx eu- eub euc eud eue eul eux ex- exc exd exe exl exu exx lbb lbc lbd lbe lbl lbu lbx lcb lcc lcd lce lcl lcu lcx ldb ldc ldd lde ldl ldu leb lec led lee lel leu lex llb llc lld lle lll llu lub luc lud lue lul luu lux lxc lxd lxx ubb ubc ube ubl ubu ubx ucb ucc ucd uce ucl ucu udb udc udd ude udl udu udx ueb uec ued uee uel ulb ulc uld ule ull ulu uuc uue uuu uxb uxc uxu xbc xbe xbl xbx xcb xcd xcl xcx xdb xdc xde xed xee xel xeu xex xlb xld xue xul xxl xxx