b-u bbb bbc bbd bbe bbg bbl bbt bbu bcb bcc bcd bce bcg bcl bct bcu bdb bdc bdd bde bdg bdl bdt bdu be- beb bec bed bee beg bel bet beu bgb bgc bgd bge bgg bgl bgt bgu blb blc bld ble blg bll blt blu btb btc btd bte btg btl btt btu bub buc bud bue bug bul but buu c-- cbb cbc cbd cbe cbg cbl cbt cbu ccb ccc ccd cce ccg ccl cct ccu cdb cdc cdd cde cdg cdl cdt cdu ce- ceb cec ced cee ceg cel cet ceu cgb cgc cgd cge cgg cgl cgt cgu cl- clb clc cld cle clg cll clt clu ctb ctc ctd cte ctg ctl ctt ctu cub cuc cud cue cug cul cut cuu dbb dbc dbd dbe dbg dbl dbt dbu dcb dcc dcd dce dcg dcl dct dcu ddb ddc ddd dde ddg ddl ddt ddu de- deb dec ded dee deg del det deu dgc dgd dge dgg dgl dgt dgu dl- dlb dlc dld dle dlg dll dlt dlu dtb dtc dtd dte dtg dtl dtt dtu dub duc dud due dug dul dut ebb ebc ebd ebe ebg ebl ebt ebu ec- ecb ecc ecd ece ecg ecl ect ecu ed- edb edc edd ede edg edl edt edu eeb eec eed eee eeg eel eet egb egc egd ege egg egl egt egu elb elc eld ele elg ell elt elu etb etc etd ete etg etl ett etu eu- eub euc eud eue eug eul eut g-d gbc gbd gbe gbg gbl gbt gbu gcb gcc gcd gce gcg gcl gct gcu gdb gdc gdd gde gdl gdt gdu ge- geb gec ged gee geg gel get geu ggb ggc ggd ggg ggt ggu glb glc gld gle glg gll glt glu gtb gtc gtd gte gtg gtl gtt gtu gu- gub guc gud gue gug gul gut guu lbb lbc lbd lbe lbg lbl lbt lbu lcb lcc lcd lce lcg lcl lct lcu ldb ldc ldd lde ldg ldl ldt ldu leb lec led lee leg lel let leu lgb lgc lgd lge lgg lgl lgt lgu llb llc lld lle llg lll llt llu ltb ltc ltd lte ltg ltl ltt ltu lub luc lud lue lug lul lut luu tbb tbc tbd tbe tbg tbl tbt tbu tcb tcc tcd tce tcg tcl tct tcu tdb tdc tdd tde tdg tdl tdt tdu te- teb tec ted tee teg tel tet teu tgb tgc tge tgg tgl tgt tgu tlc tld tle tlg tll tlt tlu ttb ttc ttd tte ttg ttl ttt ttu tub tuc tud tue tug tul tut tuu ubb ubc ube ubg ubl ubt ubu ucb ucc ucd uce ucg ucl uct ucu udb udc udd ude udg udl udt udu ueb uec ued uee ueg uel uet ugb ugc uge ugg ugl ugt ugu ulb ulc uld ule ulg ull ult ulu utb utc utd ute utl utt utu uuc uue uug uut uuu