b-u bbb bbf bbl bbt bbu bfb bff bfl bft bfu blb blf bll blt blu btb btf btl btt btu bub buf bul but buu fbb fbf fbl fbt fbu fff ffl fft ffu flb flf fll flt flu ftb ftf ftl ftt ftu fub fuf ful fut fuu lbb lbf lbl lbt lbu lfb lff lfl lft lfu llb llf lll llt llu ltb ltf ltl ltt ltu lub luf lul lut luu tbb tbf tbl tbt tbu tfb tff tfl tft tfu tlf tll tlt tlu ttb ttf ttl ttt ttu tub tuf tul tut tuu ubb ubf ubl ubt ubu uff ufl uft ufu ulb ulf ull ult ulu utb utf utl utt utu uut uuu

bbbb bblb bffl bftt blbt blub bluf blut bttb bubb bubu buff bulb bull bult bulu but- butt ffff fftf flub fluf ft-l ftlb ftub fubb fubu fuff fufu full fulu futu llll ltbf ltbl luff luft lufu lull lulu ttbb ttff tttt ttul tubb tubu tuff tuft tufu tull tulu tutl tutt tutu ubtf ulft ultt ulul uttu uulu uutf uuuu

bluff bluft bulb- bull- bulul bulut butut fluff ft-lb fu-fu fullf lulul tbtbt tbutt ttttt tubul ululu uuuuu

bbbbbb blublu bububu bulbul lufful tubul- tuttul tuttut

bbbbbbb tul-tul tut-tut

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fllllllll full-butt tuff-tuff

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