b-u bbb bbs bbt bbu bby bsb bss bst bsu bsy btb bts btt btu bty bub bus but buu buy by- bys byt byu sbb sbs sbt sbu sby ss- ssb sss sst ssu stb sts stt stu sty sub sus sut suu suy sy- syb sys syt syu tbb tbs tbt tbu tsb tss tst tsu tsy ttb tts ttt ttu tty tub tus tut tuu tuy tys tyt ubb ubs ubt ubu uby usb uss ust usu utb uts utt utu uty uus uut uuu uys uyu ybs yby ysb yss yst ysu ysy yts ytt ytu yus yut yuu yuy yyb yys yyt yyu yyy

bbbb bbbs bsts btss bttb btus bubb bubs bubu buss bust busu busy but- buts butt buty buus buys buyu bysb byss byst bysy byts sbbs sbst sbus ssby sssb ssss sstb ssts stbs stss stub stus stut stuy stys sub- subb subs sus- suss sust susu susy sutu suty suus suyu syss syst sytt tbbs tbst tsst tsts tsys ttbb ttss tttt ttys tubb tubs tubu tuss tust tuts tutt tutu tuty tuys tyss tyst tytt tyty tyus usbs ussb usss usst ussu ussy ustb usts usus utby uttu uuuu uyts ybbs ysby yssu ysyb yubu yust yutu yuty yuyu yyyy

bbuss btstu bubby bubsy busby bussu bussy busts busut busuu butts butty butut buysy by-by bybus s-bus sssss stubs stuss subbu subby subss subst sussy susus suttu sutty systs tbtbt tbutt tsuyu ttttt ttusb tubbs tubby tussy tutty tutus tuyss tytus usbby usutu uuuuu

bbbbbb bs-tbs bububu busyty bututs byssus stubbs stubby stussy tuttut ubussu

bbbbbbb bustuus sssssss tut-tut tuttuts yuyutsu

bbbbbbbb syubyutu

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