b-u bbb bbc bbd bbe bbg bbs bbt bbu bcb bcc bcd bce bcg bcs bct bcu bdb bdc bdd bde bdg bds bdt bdu be- beb bec bed bee beg bes bet beu bgb bgc bgd bge bgg bgs bgt bgu bsb bsc bsd bse bsg bss bst bsu btb btc btd bte btg bts btt btu bub buc bud bue bug bus but buu c-- cbb cbc cbd cbe cbg cbs cbt cbu ccb ccc ccd cce ccg ccs cct ccu cdb cdc cdd cde cdg cds cdt cdu ce- ceb cec ced cee ceg ces cet ceu cgb cgc cgd cge cgg cgs cgt cgu csb csc csd cse csg css cst csu ctb ctc ctd cte ctg cts ctt ctu cub cuc cud cue cug cus cut cuu dbb dbc dbd dbe dbg dbs dbt dbu dcb dcc dcd dce dcg dcs dct dcu ddb ddc ddd dde ddg dds ddt ddu de- deb dec ded dee deg des det deu dgc dgd dge dgg dgs dgt dgu dsb dsc dsd dse dsg dss dst dsu dtb dtc dtd dte dtg dts dtt dtu dub duc dud due dug dus dut ebb ebc ebd ebe ebg ebs ebt ebu ec- ecb ecc ecd ece ecg ecs ect ecu ed- edb edc edd ede edg eds edt edu eeb eec eed eee eeg ees eet egb egc egd ege egg egs egt egu es- esb esc esd ese esg ess est esu etb etc etd ete etg ets ett etu eu- eub euc eud eue eug eus eut g-d gbc gbd gbe gbg gbs gbt gbu gcb gcc gcd gce gcg gcs gct gcu gdb gdc gdd gde gds gdt gdu ge- geb gec ged gee geg ges get geu ggb ggc ggd ggg ggs ggt ggu gsb gsc gsd gse gsg gss gst gsu gtb gtc gtd gte gtg gts gtt gtu gu- gub guc gud gue gug gus gut guu sbb sbc sbd sbe sbg sbs sbt sbu scb scc scd sce scg scs sct scu sdb sdc sdd sde sdg sds sdt sdu se- seb sec sed see seg ses set seu sgb sgc sgd sge sgg sgs sgt sgu ss- ssb ssc ssd sse ssg sss sst ssu stb stc std ste stg sts stt stu sub suc sud sue sug sus sut suu tbb tbc tbd tbe tbg tbs tbt tbu tcb tcc tcd tce tcg tcs tct tcu tdb tdc tdd tde tdg tds tdt tdu te- teb tec ted tee teg tes tet teu tgb tgc tge tgg tgs tgt tgu tsb tsc tsd tse tsg tss tst tsu ttb ttc ttd tte ttg tts ttt ttu tub tuc tud tue tug tus tut tuu ubb ubc ube ubg ubs ubt ubu ucb ucc ucd uce ucg ucs uct ucu udb udc udd ude udg uds udt udu ueb uec ued uee ueg ues uet ugb ugc uge ugg ugs ugt ugu usb usc usd use usg uss ust usu utb utc utd ute uts utt utu uuc uue uug uus uut uuu