bbbb bbbs bblb bbls bbpr bffl bffs bfpo bfpp bfsi bfsr bfts bftt bibb bibi bibl bibo bibs biff bifi biis bili bill bilo bils bilt bio- bioi biol bios biot bipp bips birb biri birl biro birr birs birt bis- bisl biso bisp biss bist bito bits bitt blbt blio blip blir blis blit blls blob bloo blop blot blsp blss blst blts bobb bobi bobo bobs boff bofs boi- boii boil bois boit boli boll bolo bols bolt boob boof bool boop boor boos boot bopp bops bor- borf bori boro borr bors bort bosi boso boss bost botb boti boto bots bott bpfl bpot bptf bpti bril brio bris brit brlp brls brob brol broo bror bros brot brrr brrs brsb brsr brst bsff bsfs bsos bspp bspr bsts btbp btlp btob btor btps btrt btss bttb fbis fbop fbrs ffff ffii ffps ffrr ffss fftf fibp fibs fiff fifi fifo fift fiii fiil fili fill filo fils fior fios fipp fips firs fisi fiss fist fiti fits fitt flii flip flis flit flob floo flop flor flos flot flts fobs fobt fofo foil fois foli foll folo folr fols folt foof fool foos foot fopp fops for- forb fori forl foro forr fors fort fosb fosi foso foss fost foti foto fotp fots fott fprf frib fril frio frip fris frit frob frol frop fros frot frps frsb frso frst fsfi fsfo fspf fssf fssp ft-l ftii ftlb ftop ftos ftps ftrs ftsr ibfi ibis ibos ibot ibri ibro ibsf ibss ibtb ibtl ibts ifbb ifil ifis ifit ifor ifpo ifps ifrb ifrf ifri ifsb ifso ifsp ifto iiii iiio iiis iiit iioi iioo iiop iios iipf iirs iisi iisp iisr iist iitr iitt ilio ilir ilis ilit ill- illi illo illp ills illt iloo ilos ilot ilpr ilts iobi ioii ioio ioit iolo ioof iooi iooo ioos iopl iops iori iors ioso iotf ioto ipil iplo ipop ipos ippf ippo ippr ipri ipsi ipso ipsp ipss ipto ipts irbp iri- iril irio irip iris irlb irob irop irps irri irrs irsf irsp irtf irti irtp irts isbl isbt isfp isil isis isit isls iso- isof isol isop isor isos ispf ispr isps isri isrp issf issi isso issp issr isss isti isto istp istr ists itbs itif itil itis itll itof itoi itol itoo itor itos itrf itri itrs itsf itsi itso itsp ittf itto lblr lbos lbrs lbrt lftp lfts libo libr libs liff lifl lifo lift liii liir liis lilb lili lill lilo lils lilt lio- lior lios lip- lipb lipi lipl lipo lipp lips liri lirl liro lirp lirr lirs lirt lisi liso lisp liss list litb liti litl lito litr lits litt llbs llll lloo llps lob- lobb lobi lobo lobs loff lofi loft loif loir lois loit loli loll lolo lols loob loof lool loop loor loos loot lopi lopp lops lori loro lors losi loso losp loss lost loti lotl loto lotr lots lott lpfp lpft lppl lprp lpss lptb lrif lroi lrps lrrr lrst lrts ls-r lsof lspl lspr lsso lssp lssr lsts ltbf ltbl ltib ltps ltrs ltsi ltsp ltsr lttr obbo obis obit obls oboi obol obor obos obot obri obro obsr obss obst obts off- offo offr offs ofit ofor ofst oftp oiii oils oios oirt oist oiti olbo olfs olib olio olis olit olli ollo olof olor olos olot olsi olst oobi ooff oofs oolo oooo ooos oops oort oosi oost ootb ootp oots opii opio opis opit opls opo- opor opos oppi oppo opps opsi opti opto opts orbb orbi orbo orbs orff orfi orfs ori- orif oril orio oris orit orlo oro- orof oror oros orot orpi orps orri orro orrs orsi orso orto orts osbp osii osip osis osli oslo osoi osoo osor osos osro ossb ossi osso osti ostr osts otbs otfp otif otis otit oto- otof otoo otor otos otpp otro otrs otso otti otto otts pbil pbrf pbrs pbsp pfff pffr pfft pfis pfit pfli pfps pibb pibi piff pifs piip pil- pili pill pilo pils pilt piob piot pipi pipo pipp pips piri pirl piro pirr pirs pisi piso piss pist pitf piti pito pitr pits pitt plbr plff plib plif plio plip plis plit plob ploo plop plos plot plpp plri plsi plss pltf pltt pobo pobs poff pofi poil poio pois poli poll polo pols polt poof pool poop poor poos poot pop- popi popo popp pops popt porb pori poro porr pors port posb posi poso poss post potf poti poto pots pott ppib ppif ppli pplo ppos pppo pppp ppps pprf ppsf ppss ppts pptt prbs prfs pri- prif prii pris prlr prls pro- prob prof prol proo prop pros prot prps prri prrs prsi prsl prso prss prti prtp prtr psbr psbt psfs psil psip psis psoi psol psos pspi pspp pspr psps psrp psso psst psts ptbl ptol ptop ptrf rbbb rbbr rbbs rbis rbsl rbsp rbss rbst rffl rib- ribo ribs riff rifs rift riif riis rill rilo rilp riol rios riot ripi ripl ripp ripr rips ript riri rirs risi riso risp riss rist riti ritl rito rits ritt rlif rlls rob- robb robi robo robs robt roff rofl rofo roif roil roio roir rois roit rolf roll rolo rolp rolt roob roof rooi rool roop roor roos root ropo rops rori roro rort rosi roso rosp ross rost roti rotl roto rotr rots rott rpii rpls rpob rpof rpos rpps rpts rrif rrrr rrsp rsbi rsis rslp rsos rspb rspo rsps rssl rstp rsts rtbf rtfb rtls rtlt rtps rtss rttp rtts s-ib s-ii s-os sbbs sbor sbot sbsi sbsp sbst sfio sfls sfor sfos sfro sfss sftp sfts sibi sibo sibs siff sifl sifo sifr sift siit sil- silf sili sill silo sils silt siol siop sior sios siot sipi sipo sipp sips sipt sirf siri siro sirp sirr sirs sirt sisi siss sist sit- siti sito sits sitt sl-i slbp slft slib slip slir slit sllp