bbb bbf bbi bbo bbr bbs bbt bby bfb bff bfi bfo bfr bfs bft bfy bi- bib bif bii bio bir bis bit biy bob bof boi boo bor bos bot boy brb brf bri bro brr brs brt bry bsb bsf bsi bso bsr bss bst bsy btb btf bti bto btr bts btt bty by- byf byi byo byr bys byt fbb fbf fbi fbo fbr fbs fbt fff ffi ffo ffr ffs fft ffy fib fif fii fir fis fit fob fof foi foo for fos fot foy frb frf fri fro frr frs frt fry fsb fsf fsi fso fsr fss fst ftb ftf fti fto ftr fts ftt fty fy- fyb fyi fyo i-f ibb ibf ibi ibo ibr ibs ibt iby ifb iff ifi ifo ifr ifs ift ify iib iif iii iio iir iis iit io- iob iof ioi ioo ior ios iot ir- irb irf iri iro irr irs irt iry is- isb isf isi iso isr iss ist isy itb itf iti ito its itt ity iyo iyr iys iyt iyy o-i ob- obb obf obi obo obr obs obt oby of- ofb off ofi ofo ofr ofs oft oib oif oii oio oir ois oit oo- oob oof ooi ooo oor oos oot or- orb orf ori oro orr ors ort ory os- osb osf osi oso osr oss ost ot- otb otf oti oto otr ots ott oyi oyo oys rbb rbf rbi rbo rbr rbs rbt rfb rff rfi rfo rfr rfs rft rib rif rii rio rir ris rit riy rob rof roi roo ror ros rot roy rrb rrf rri rrr rrs rrt rsb rsf rsi rso rsr rss rst rtb rtf rti rto rtr rts rtt rty ry- ryf ryo ryr rys ryy sbb sbf sbi sbo sbr sbs sbt sby sfb sff sfi sfo sfr sfs sft sib sif sii sio sir sis sit sob sof soi soo sor sos sot soy sr- srb srf sri sro srr srs srt sry ss- ssb ssf ssi sso ssr sss sst stb stf sti sto str sts stt sty sy- syb syi syr sys syt tbb tbf tbi tbo tbr tbs tbt tfb tff tfi tfo tfr tfs tft tib tif tii tio tir tis tit tiy to- tob tof toi too tor tos tot toy trb trf tri tro trr trs trt try tsb tsf tsi tso tsr tss tst tsy ttb ttf tti tto ttr tts ttt tty tyf tyo tyr tys tyt ybf ybi ybr ybs yby yff yfr yfs yft yif yii yio yir yis yit yob yof yoi yoo yor yos yot yoy yrf yro yrs yrt ysb ysi yso ysr yss yst ysy ytf yto ytr yts ytt yyb yyf yys yyt yyy

bbbb bbbs bboy bbyo bffs bfsi bfsr bfts bftt bibb bibi bibo bibs biff bifi biis bio- bioi bios biot birb biri biro birr birs birt biry bis- biso biss bist bisy bito bits bitt biys bobb bobi bobo bobs boby boff bofs boi- boii bois boit boob boof boor boos boot bor- borf bori boro borr bors bort bory bosi boso boss bost botb boti boto bots bott boty boyf boyi boyo boys brio bris brit brob broo bror bros brot brrr brrs brsb brsr brst bry- bryo bsff bsfs bsos bsts btob btor btrt btry btss bttb byit byob byoi byos byrt bysb bysi byso byss byst bysy byts fbis fbrs ffff ffii ffrr ffss fftf fibs fiff fifi fifo fift fiii fior fios firs firy fisi fiss fist fiti fits fitt fobs fobt fofo fois foof foos foot for- forb fori foro forr fors fort fosb fosi foso foss fost foti foto fots fott foty foys foyt frib frio fris frit frob fros frot frsb frso frst frys fsfi fsfo fssf ftfy ftii ftos ftrs ftsr fyfi fyrs fyry fyti i-by ibfi ibis ibos ibot ibri ibro ibsf ibss ibtb ibts ibyi ifbb ifby iffy ifis ifit ifor ifrb ifrf ifri ifsb ifso ifto ifyo iiii iiio iiis iiit iioi iioo iios iirs iisi iisr iist iitr iitt iobi ioby ioii ioio ioit ioof iooi iooo ioos iori iors ioso iotf ioto irby iri- irio iris iriy irob irri irrs irsf irtf irti irts isbt isis isit iso- isof isor isos isri issf issi isso issr isss issy isti isto istr ists isty isys itbs itby itif itis itof itoi itoo itor itos itrf itri itrs itry itsf itsi itso itsy ittf itto itty iyos obbo obby obis obit oboi obor obos obot oboy obri obro obsr obss obst obts off- offo offr offs offy ofit ofor ofst oiii oios oirt oiry oist oiti oobi ooby ooff oofs oofy oooo ooos oort oory oosi oost ootb oots ooty orbb orbi orbo orbs orby orff orfi orfs ori- orif orio oris orit oro- orof oror oros orot oroy orri orro orrs orry orsi orso orsy orto orts orys osby osii osis osoi osoo osor osos osro ossb ossi osso ossy osti ostr osts osyt otbs otif otis otit oto- otof otoo otor otos otoy otro otrs otry otso otti otto otts otyr oyri oyss oyst rbbb rbbr rbbs rbis rbss rbst rib- ribo ribs riby riff rifs rift riif riis rios riot riri rirs risi riso riss rist riti rito rits ritt riyf riyo rob- robb robi robo robs robt roby roff rofo roif roio roir rois roit roob roof rooi roor roos root rori roro rort rory rosi roso ross rost rosy roti roto rotr rots rott roty roys royt rrif rrrr rsbi rsis rsos rsts rtbf rtfb rtss rtts ryff ryft ryif ryis ryob ryot rysy rytt ryyf ryyt s-ib s-ii s-os sbbs sbor sbot sbsi sbst sfio sfor sfos sfro sfss sfts sibi sibo sibs siby siff sifo sifr sift sify siit sior sios siot sirf siri siro sirr sirs sirt sisi siss sist sisy sit- siti sito sits sitt sity siyi sobo sobr sobs sobt sofi sofo soft soif soir