b-u bbb bbf bbi bbo bbs bbt bbu bbx bfb bff bfi bfo bfs bft bfu bfx bi- bib bif bii bio bis bit biu bix bob bof boi boo bos bot bou box bsb bsf bsi bso bss bst bsu bsx btb btf bti bto bts btt btu btx bub buf bui buo bus but buu bux bxb bxi bxo bxx fbb fbf fbi fbo fbs fbt fbu fbx fff ffi ffo ffs fft ffu ffx fib fif fii fis fit fiu fix fob fof foi foo fos fot fou fox fsb fsf fsi fso fss fst fsu fsx ftb ftf fti fto fts ftt ftu ftx fub fuf fui fuo fus fut fuu fux fxi fxs fxt fxu fxx i-f ibb ibf ibi ibo ibs ibt ibu ibx ifb iff ifi ifo ifs ift ifu ifx iib iif iii iio iis iit iiu iix io- iob iof ioi ioo ios iot iou is- isb isf isi iso iss ist isu itb itf iti ito its itt itu itx iu- iub iui ius iut ixi o-i ob- obb obf obi obo obs obt obu obx of- ofb off ofi ofo ofs oft ofu ofx oib oif oii oio ois oit oiu oo- oob oof ooi ooo oos oot oox os- osb osf osi oso oss ost osu osx ot- otb otf oti oto ots ott otu ou- ouf oui ouo ous out ox- oxb oxf oxi oxo oxt oxx sbb sbf sbi sbo sbs sbt sbu sbx sfb sff sfi sfo sfs sft sfu sfx sib sif sii sio sis sit siu six sob sof soi soo sos sot sou sox ss- ssb ssf ssi sso sss sst ssu ssx stb stf sti sto sts stt stu stx sub suf sui suo sus sut suu sux sxi sxs sxt sxu t-x tbb tbf tbi tbo tbs tbt tbu tfb tff tfi tfo tfs tft tfu tfx tib tif tii tio tis tit tiu tix to- tob tof toi too tos tot tou tox tsb tsf tsi tso tss tst tsu tsx ttb ttf tti tto tts ttt ttu ttx tub tuf tui tuo tus tut tuu tux txf txi txs txt txu ubb ubf ubi ubo ubs ubt ubu ubx uff ufi ufo ufs uft ufu ufx uib uif uii uio uis uit uiu uob uoo uos uot uox usb usf usi uso uss ust usu usx utb utf uti uto uts utt utu utx uus uut uuu uxb uxf uxo uxt uxu xbx xfs xft xfx xii xio xis xit xiu xix xof xoi xoo xos xot xox xsb xsi xss xst xtf xti xts xtx xui xus xxi xxo xxx

-ous bbbb bbbs bbox bffs bfsi bfts bftt bibb bibi bibo bibs biff bifi biis bio- bioi bios biot biou biox bis- biso biss bist bisu bito bits bitt bitu bitx bixi bobb bobi bobo bobs bobu boff bofs bofu boi- boii bois boit boiu boob boof boos boot boox bosi boso boss bost bosu botb boti boto bots bott bouf bous bout bsff bsfs bsix bsos bsts btob btss bttb btus bubb bubi bubo bubs bubu buff bufo buif buis buit buiu buix busi buss bust busu busx but- buti buto buts butt buus fbis fbus ffff ffii ffss fftf fibs fiff fifi fifo fift fiii fios fisi fiss fist fisu fiti fits fitt fixt fixx fobs fobt fofo fois foix foof foos foot fosb fosi foso foss fost foti foto fots fott fous fout foxx fsfi fsfo fsix fssf ftii ftos ftub fubb fubs fubu fuff fufu fuit fusi fuso fuss fust fusu futi futo futs futu fuxi ibfi ibis ibos ibot ibox ibsf ibss ibtb ibts ibus ifbb ifis ifit ifsb ifso ifto iiii iiio iiis iiit iioi iioo iios iisi iist iisu iitt iobi ioii ioio ioit ioof iooi iooo ioos ioso iosu iotf ioto ious isbt isbx isis isit iso- isof isos issf issi isso isss issu isti isto ists isus itbs itif itis itof itoi itoo itos itou itsf itsi itso itsu ittf itto iuiu iuss iust ixos ixxi obbo obis obit obix oboi obos obot obox obss obst obts obus off- offo offs offu ofit ofst ofus oiii oios oist oisu oiti oobi ooff oofs oooo ooos oosi oost ootb oots oous osii osis osoi osoo osos ossb ossi osso ossu osti osts otbs otif otis otit oto- otof otoo otos otso otsu otti otto otts ottu otus oubs ouff ouii ouis ouit oust out- outb outi outo outs ouu- oxi- oxis oxo- oxof oxos oxox oxsi oxuf oxus oxxo s-ib s-ii s-os sbbs sbot sbsi sbst sbus sfio sfos sfss sfsu sfts sibi sibo sibs sibu siff sifo sift sifu siit sios siot siou siox sisi siss sist sisu sit- siti sito sits sitt situ siui sius siut sixo sixt sixx sobo sobs sobt sobu sofi sofo soft soif sois soit soof soos soot sosi soso soss sost soto sots sotu souf sous sout soxs ssis ssit ssot sssb sssf sssi ssss sstb ssts stbs stfu stib stif stio stis stit stix stob stof stoo stos stot stou stox stsf stsi stss stub stuf stus stut stux sub- subb subi subo subs suf- suff sufi sufs sufu suio suis suit suos sus- susi suso suss sust susu suti suto sutu suus sux- suxt tbbs tbit tbox tbst tfot tfox tfsi tfss tibi tibs tibu tiff tifo tift tiit tiiu tios tiou tisb tisi tiso tiss tist titi tito tits titt titu tixt tobi tobo tobs tobt tobu toff tofi tofo toft tofu tois toit toof toos toot tosb tosi toso toss tost tosu tosx toti toto tots tott toui tous tout tox- toxi toxo toxs toxt tsis tsix tsob tsoi tsos tsou tssf tssi tsst tsts tsui ttbb ttff ttss tttt tubb tubo tubs tubu tuff tufi tufo tuft tufu tuis tuit tuiu tuix tuos tusi tuss tust tuti tuto tuts tutt tutu tuuo tuxs txii ubbi ubbo ubii ubis ubit ubos ubtf ufos ufxs uist uits uofo usbs