b-u bbb bbs bbt bbu bsb bss bst bsu btb bts btt btu bub bus but buu sbb sbs sbt sbu ss- ssb sss sst ssu stb sts stt stu sub sus sut suu tbb tbs tbt tbu tsb tss tst tsu ttb tts ttt ttu tub tus tut tuu ubb ubs ubt ubu usb uss ust usu utb uts utt utu uus uut uuu

bbbb bbbs bsts btss bttb btus bubb bubs bubu buss bust busu but- butt buus sbbs sbst sbus sssb ssss sstb ssts stbs stss stub stus stut sub- subb subs sus- suss sust susu sutu suus tbbs tbst tsst tsts ttbb ttss tttt tubb tubs tubu tuss tust tuts tutt tutu usbs ussb usss usst ussu ustb usts usus uttu uuuu

bbuss btstu bussu busts busut busuu butts butut s-bus sssss stubs stuss subbu subss subst susus suttu tbtbt tbutt ttttt ttusb tubbs tutus usutu uuuuu

bbbbbb bs-tbs bububu bututs stubbs tuttut ubussu

bbbbbbb bustuus sssssss tut-tut tuttuts

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