b-u bbb bbe bbg bbl bbm bbt bbu be- beb bee beg bel bem bet beu bgb bge bgg bgl bgm bgt bgu blb ble blg bll blm blt blu bmb bme bmg bml bmm bmt bmu btb bte btg btl btm btt btu bub bue bug bul bum but buu ebb ebe ebg ebl ebm ebt ebu eeb eee eeg eel eem eet egb ege egg egl egm egt egu elb ele elg ell elm elt elu em- emb eme emg eml emm emt emu etb ete etg etl etm ett etu eu- eub eue eug eul eut gbe gbg gbl gbm gbt gbu ge- geb gee geg gel gem get geu ggb ggg ggm ggt ggu glb gle glg gll glm glt glu gmb gme gmg gml gmm gmt gtb gte gtg gtl gtm gtt gtu gu- gub gue gug gul gum gut guu lbb lbe lbg lbl lbm lbt lbu leb lee leg lel lem let leu lgb lge lgg lgl lgm lgt lgu llb lle llg lll llm llt llu lmb lme lmg lml lmm lmt lmu ltb lte ltg ltl ltm ltt ltu lub lue lug lul lum lut luu mbb mbe mbg mbl mbm mbt mbu meb mee meg mel mem met meu mgb mge mgl mgm mgt mgu mlb mle mlg mll mlm mlt mlu mmb mme mmg mml mmm mmt mmu mtb mte mtg mtl mtm mtt mtu mub mue mug mul mum mut muu tbb tbe tbg tbl tbm tbt tbu te- teb tee teg tel tem tet teu tgb tge tgg tgl tgm tgt tgu tle tlg tll tlm tlt tlu tmb tme tmg tml tmm tmt tmu ttb tte ttg ttl ttm ttt ttu tub tue tug tul tum tut tuu ubb ube ubg ubl ubt ubu ueb uee ueg uel uem uet ugb uge ugg ugl ugm ugt ugu ulb ule ulg ull ulm ult ulu um- umb ume umg uml umm umt umu utb ute utl utm utt utu uue uug uum uut uuu