b-u bbb bbg bbl bbm bbt bbu bgb bgg bgl bgm bgt bgu blb blg bll blm blt blu bmb bmg bml bmm bmt bmu btb btg btl btm btt btu bub bug bul bum but buu gbg gbl gbm gbt gbu ggb ggg ggm ggt ggu glb glg gll glm glt glu gmb gmg gml gmm gmt gtb gtg gtl gtm gtt gtu gu- gub gug gul gum gut guu lbb lbg lbl lbm lbt lbu lgb lgg lgl lgm lgt lgu llb llg lll llm llt llu lmb lmg lml lmm lmt lmu ltb ltg ltl ltm ltt ltu lub lug lul lum lut luu mbb mbg mbl mbm mbt mbu mgb mgl mgm mgt mgu mlb mlg mll mlm mlt mlu mmb mmg mml mmm mmt mmu mtb mtg mtl mtm mtt mtu mub mug mul mum mut muu tbb tbg tbl tbm tbt tbu tgb tgg tgl tgm tgt tgu tlg tll tlm tlt tlu tmb tmg tml tmm tmt tmu ttb ttg ttl ttm ttt ttu tub tug tul tum tut tuu ubb ubg ubl ubt ubu ugb ugg ugl ugm ugt ugu ulb ulg ull ulm ult ulu um- umb umg uml umm umt umu utb utl utm utt utu uug uum uut uuu