bbb bbf bbo bbs bbt bbx bfb bff bfo bfs bft bfx bob bof boo bos bot box bsb bsf bso bss bst bsx btb btf bto bts btt btx bxb bxo bxx fbb fbf fbo fbs fbt fbx fff ffo ffs fft ffx fob fof foo fos fot fox fsb fsf fso fss fst fsx ftb ftf fto fts ftt ftx fxs fxt fxx ob- obb obf obo obs obt obx of- ofb off ofo ofs oft ofx oo- oob oof ooo oos oot oox os- osb osf oso oss ost osx ot- otb otf oto ots ott ox- oxb oxf oxo oxt oxx sbb sbf sbo sbs sbt sbx sfb sff sfo sfs sft sfx sob sof soo sos sot sox ss- ssb ssf sso sss sst ssx stb stf sto sts stt stx sxs sxt t-x tbb tbf tbo tbs tbt tfb tff tfo tfs tft tfx to- tob tof too tos tot tox tsb tsf tso tss tst tsx ttb ttf tto tts ttt ttx txf txs txt xbx xfs xft xfx xof xoo xos xot xox xsb xss xst xtf xts xtx xxo xxx

bbbb bbbs bbox bffs bfts bftt bobb bobo bobs boff bofs boob boof boos boot boox boso boss bost botb boto bots bott bsff bsfs bsos bsts btob btss bttb ffff ffss fftf fobs fobt fofo foof foos foot fosb foso foss fost foto fots fott foxx fsfo fssf ftos obbo obos obot obox obss obst obts off- offo offs ofst ooff oofs oooo ooos oost ootb oots osoo osos ossb osso osts otbs oto- otof otoo otos otso otto otts oxo- oxof oxos oxox oxxo s-os sbbs sbot sbst sfos sfss sfts sobo sobs sobt sofo soft soof soos soot soso soss sost soto sots soxs ssot sssb sssf ssss sstb ssts stbs stob stof stoo stos stot stox stsf stss tbbs tbox tbst tfot tfox tfss tobo tobs tobt toff tofo toft toof toos toot tosb toso toss tost tosx toto tots tott tox- toxo toxs toxt tsob tsos tssf tsst tsts ttbb ttff ttss tttt xbox xoxo xtbs xxxo xxxx

bo-bo bobos bobst bobts boffo boffs boobs boofs boost boots bootx bosox bosso botos botox botts boxof bsoft f-box fofos foots fotos foxxx offof offto ofoto ooooo ososo ossos otoso ototo ottos s-bot s-box so-so softs soots soss- sosto sotoo sotos sotto sotts sssss stobs stoff stoob stoos stoot stoss stots stott stoxx t-box tbtbt tobot toffo toffs tofts toobs toost toots tosos toss- tosto toto- totoo totos toxo- ttttt x-box xotox xoxox

bbbbbb bobbos boffos booboo boosts bososo bs-tbs foboff foofoo fosso foxbox oooooo ossott sobos soosoo stobbs stotts toboot toboso tootoo tossto tottos toxbot tsotso xoxoxo

bbbbbbb boo-boo booboos bossost fobsoff foo-foo obox-ob off-off ox-foot oxoboxo sssssss t-stoff too-too tossoff tototoo xobotos xxxxxxx

bbbbbbbb bo-bo-bo bobobobs toottoot xoxoxoxo

bosssssts

bobbobbobs bosoxbotox

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