-ism bbbb bbbs bffs bfsi bfsr bfts bftt bibb bibi bibo bibs biff bifi biis bimo bims bio- bioi bios biot birb biri biro birr birs birt bis- biso biss bist bito bits bitt bmir bmmi bmts bobb bobi bobo bobs boff bofs boi- boii boim bois boit bomb bomi boms bomt boob boof boom boor boos boot bor- borf bori borm boro borr bors bort bosi bosm boso boss bost botb boti boto bots bott brfm brim brio bris brit brob brom broo bror bros brot brrm brrr brrs brsb brsr brst bsff bsfs bsim bsms bsmt bsos bsrm bssm bsts btob btor btrt btss bttb fbis fbom fbrs ffff ffii ffrr ffss fftf fibs fiff fifi fifm fifo fift fiii fimo fimr fior fios firm firs fisi fism fiss fist fiti fits fitt fmri fmsr fmss fobs fobt fofo fois fomo fomt foof foom foos foot for- forb fori form foro forr fors fort fosb fosi foso foss fost foti fotm foto fots fott frib frim frio fris frit frob from fros frot frsb frsm frso frst fsfi fsfo fsim fssf ftii ftos ftrs ftsr ibbm ibfi ibim ibis ibms ibos ibot ibri ibro ibsf ibss ibtb ibts ifbb ifim ifis ifit ifor ifrb ifrf ifri ifsb ifso ifto iiii iiio iiis iiit iioi iioo iios iirs iisi iism iisr iist iitm iitr iitt imbi imfi imir imit immi immo imms immt imof imri imro imrr imsf imsi imso imsr imss imst imto imts iobi ioii ioio ioit iomo ioof iooi iooo ioos iori iors ioso iotf ioto irbm irfm iri- irio iris irmo irms irob irri irrs irsf irtf irti irts isbt isim isis isit ismi ismo isms iso- isof isor isos isri issf issi isso issr isss isti isto istr ists itbs itif itim itis itmo itms itof itoi itoo itor itos itrf itri itrs itsf itsi itso ittf itto mbbs mbim mbio mbis mbms mbrs mbsf mfbm mfor mfri mfrs mfsb mftf mibs miff mifi miii miio miis miit mim- mimi mimo mims mio- mios miri miro mirr mirs mirt mis- misi miso misr miss mist mit- mitb miti mitm mito mits mitt mmff mmii mmis mmmm mmms mmor mmrf mmst mmts mobb mobi mobo mobs moff mofo moif moii moio moir mois moit momi momo moms moob moor moos moot morb morf mori moro mors mort mosi moso moss most motb moti motm moto mots mott mrbb mrbm mrbs mris mrsi mrtm mrts mrtt msff msfs msft msmb msmm msms msor msrb msrt mssf mssi mssm mssr msst mstr msts mtbo mtbs mtff mtom mtor mtrr mtss mtst mttr mtts obbo obis obit oboi obor obos obot obri obro obsr obss obst obts off- offo offr offs ofit ofor ofst oiii oimb oios oirt oism oist oiti ombo omim omio omis omit omo- omoi omoo omor omri omro omsi oobi ooff oofs ooms oooo ooos oort oosi oost ootb oots orbb orbi orbo orbs orff orfi orfs ori- orif orio oris orit ormo oro- orof orom oror oros orot orri orro orrs orsi orso orto orts osii osim osis osm- osmo osoi osoo osor osos osro ossb ossi osso osti ostr osts otbs otif otis otit oto- otof otoo otor otos otro otrs otso otti otto otts rbbb rbbr rbbs rbis rbms rbss rbst rib- ribo ribs riff rifs rift riif riis rimi rimm rimo rims riom rios riot riri rirs risi rism riso riss rist riti rito rits ritt rmbs rmif rmst rob- robb robi robo robs robt roff rofo roif roio roir rois roit romb romi romm romo roms roob roof rooi room roor roos root rori roro rort rosi roso ross rost roti roto rotr rots rott rrif rrrr rsbi rsis rsos rsts rtbf rtfb rtfm rtmi rtms rtss rtts s-ib s-ii s-os sbbs sbor sbot sbsi sbst sfio sfmm sfor sfos sfro sfss sfts sibi sibo sibs siff sifo sifr sift siim siit simi simm simo sims simt sior sios siot sirf siri siro sirr sirs sirt sisi siss sist sit- siti sito sits sitt smbf smif smis smit smof smos smot smrf smrt smss smti sobo sobr sobs sobt sofi sofo soft soif soim soir sois soit somb somi somm somo soof soom soor soos soot sorb sori sorm soro sorr sors sort sosi soso soss sost sotm soto sots srfi srib srim sris sros srtr ssbr ssis ssit ssot ssri ssrm ssrs sssb sssf sssi sssm ssss sstb ssts stbs stib stif stim stio stir stis stit stms stmt stob stof stom stoo stor stos stot stri stro strs stsf stsi stsm stss sttr t-mo tbbs tbit tbrb tbst tfot tfrs tfsi tfss tibi tibs tiff tifo tift tiit timi timm timo tims tios tirb tiri tiro tirr tirs tisb tisi tism tiso tiss tist titi tito tits titt tmbr tmos tmro tmsi tmtt tobi tobo tobs tobt toff tofi tofo toft tois toit tomb tomi tomm tomo toms tomt toof toom toor toos toot torf tori torm toro torr tors tort tosb tosi toso toss tost toti totm toto totr tots tott trfm trfr tri- trib trif trim trio tris trit trmb trmi trms troi trom troo tros trot trsi trst trtr tsfm tsis tsob tsoi tsom tsos tssf tssi tssm tssr tsst tstm tsts ttbb ttff ttim ttms ttss tttt