b-u bbb bbl bbn bbt bbu blb bll bln blt blu bnb bnl bnn bnt bnu btb btl btn btt btu bub bul bun but buu lbb lbl lbt lbu llb lll lln llt llu lnb lnl lnn lnt lnu ltb ltl ltt ltu lub lul lun lut luu nbb nbl nbn nbt nbu nlb nll nln nlt nlu nnb nnl nnn nnt nnu ntb ntn ntt ntu nub nul nun nut nuu tbb tbl tbn tbt tbu tll tln tlt tlu tnb tnl tnn tnt ttb ttl ttn ttt ttu tub tul tun tut tuu ubb ubl ubn ubt ubu ulb ull uln ult ulu un- unb unl unn unt unu utb utl utn utt utu uun uut uuu

bbbb bblb blbt blub blut bttb bubb bubu bulb bull bult bulu bunb bunn bunt bunu but- butt llll ltbl ltnt lull lulu lunn lunt nnnn nntn ntnu nubl null nunn nunt nutt nutu tnut ttbb tttt ttul tubb tubu tull tulu tunb tunn tunu tutl tutt tutu ultt ulul untb unut uttu uulu uuuu

blunt bulb- bull- bulul bulun bulut bunun bunut butut lubun lulul nu-nu nunun t-nut tbtbt tbutt tllnn tntnt ttttt tubul tulun tutun ululu unnun unnut uuuuu

bbbbbb blublu bububu bulbul lunlun ntuntu tubul- tuntul tuttul tuttut ubuntu unlull

bbbbbbb bullnut nubuntu tul-tul tut-tut

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buln-buln

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