bbbb bbbs bibb bibi bibo bibs biis biko bio- bioi bios biot bipp bips bis- bisk biso bisp biss bist bito bits bitt bkpt bksp bobb bobi bobo bobs boi- boii bois boit boki boko boks boob book boop boos boot bopp bops bosi bosk boso boss bost botb boti boto bots bott bpot bpti bskt bsos bspp bsts btbp btob btps btss bttb ibis ibos ibot ibss ibtb ibts iiii iiio iiis iiit iioi iioo iiop iios iisi iisp iist iitt ikki ikko ikoo iobi ioii ioio ioit ioko iooi iooo ioos iops ioso ioto ipbk ipko ipop ipos ippo ipsi ipso ipsp ipss ipto ipts isbt isis isit isko iso- isok isop isos isps issi isso issp isss isti isto istp ists itbs itis itko itoi itoo itos itsi itso itsp itto k-os kbbb kbbi kbbk kbbo kbbs kbbt kbib kbik kbio kbis kbit kbkb kbkk kbko kbob kboi kbok kboo kbos kbot kbpi kbpk kbpo kbps kbpt kbsb kbsi kbsk kbso kbss kbst kbtb kbtk kbto kbts kbtt kibb kibi kibo kibs kibt kiii kiik kiip kiis kiit kiki kikk kiko kikt kioi kiok kioo kiot kip- kipi kipo kipp kips kipt kisi kisk kiso kiss kist kiti kito kits kitt kkbb kkbi kkbo kkbs kkbt kkik kkit kkkk kkob kkoo kkot kkpk kkps kkpt kksi kksp kkss kkst kktk kkts kobb kobi kobk kobo kobs koii koit kokb koki kokk koko kokp koks koob kooi kook kooo koop koos koot kopb kopi kopp kops kopt kos- kosb kosi koso kosp koss kost kotb koti kotk koto kots kott kpbb kpbi kpbs kpit kpkk kpob kpok kpoo kpop kppk kppo kppp kpsi kpso kpsp kpto kpts kptt ksbi ksbp ksbs ksib ksii ksik ksip ksis ksit kskb kskk ksko ksks ksob ksoi ksok ksoo ksop ksos kspb kspi kspk kspo ksps kspt kssi ksso ksss ksst kstb ksti kstk ksto kstp ksts kstt ktbb ktbt ktib ktik ktip ktis ktkb ktkk ktko ktks ktkt ktob ktok ktoo ktop ktot ktpi ktpk ktpo ktpt ktso ktst ktti kttk ktto kttp ktts kttt obbo obis obit obkb oboi obok obos obot obss obst obts oiii oiko oiks oios oist oiti okko okok okot okpo oksi okso okto oobi oooo ooos oops oosi oost ootb ootp oots opii opio opis opit opo- opos oppi oppo opps opsi opti opto opts osbp osii osik osip osis oski osoi osoo osos ossb ossi osso osti osts otbs otis otit oto- otok otoo otos otpp otso otti otto otts pbpk pbsp pibb pibi piip piki pikk piko piks pikt piob piot pipi pipo pipp pips pisi pisk piso piss pist piti pito pits pitt pkib pkts pobo pobs poik poio pois poko pook poop poos poot pop- popi popo popp pops popt posb posi posk poso poss post poti poto pots pott ppib ppos pppo pppp ppps ppss ppts pptt psbt psip psis psoi psos pspi pspp psps psso psst psts ptop pttk s-ib s-ii s-os sbbs sbot sbsi sbsp sbst sbtk sibi sibo sibs siik siit siki siko siks siop sios siot sipi sipo sipp sips sipt sisi sisk siss sist sit- siti sito sits sitt skik skio skip skis skit skop skot skpo skss sobo sobp sobs sobt soik sois soit soki sokk soko sook soop soos soot sopi sopo sopp sops sosi soso soss sost sotk soto sotp sots spib spik spio spip spis spit spok spoo spop spos spot spps spso spsp spss spst sptb spto spts ssis ssit ssop ssot sspo ssps sspt sssb sssi ssss sstb sstp ssts stbs stib stik stio stip stis stit stks stob stok stoo stop stos stot stpp stps stsi stss tbbs tbit tbsp tbst tbtp tibi tibs tiit tiki tiko tiop tios tip- tipi tipo tipp tips tipt tisb tisi tiso tiss tist titi tito titp tits titt tkip tkos tkts tobi tobo tobs tobt tois toit toki toko took toos toot top- topi topo topp tops topt tosb tosi tosk toso toss tost toti toto tots tott tpks tppp tptp tsis tsks tsob tsoi tsop tsos tspo tsps tspt tssi tsst tsts ttbb ttop ttss tttt