bbb bbi bbk bbo bbr bbs bby bi- bib bii bik bio bir bis biv biy bkb bkk bko bkr bks bkv bob boi bok boo bor bos bov boy brb bri brk bro brr brs brv bry bsb bsi bsk bso bsr bss bsv bsy bvb bvi bvk bvo bvr bvs bvv by- byi byk byo byr bys i-v ibb ibi ibk ibo ibr ibs ibv iby iib iii iio iir iis ikb iki ikk iko ikr iks ikv io- iob ioi ioo ior ios iov ir- irb iri irk iro irr irs irv iry is- isb isi isk iso isr iss isv isy ivb ivi ivo ivr ivs ivv ivy iyo iyr iys iyy kbb kbi kbk kbo kbr kbs kib kii kik kio kir kis kiv kkb kki kkk kkr kks kkv kky kob koi kok koo kor kos koy kri krk kro krr krs krv kry ksb ksi ksk kso ksr kss ksv kvb kvi kvk kvo kvr kvs kvv kyo kyr kys o-i ob- obb obi obk obo obr obs obv oby oib oii oik oio oir ois oiv okb oki okk oko okr oks oo- oob ooi ook ooo oor oos oov or- orb ori ork oro orr ors orv ory os- osb osi osk oso osr oss osv ov- ovb ovi ovo ovs ovv oyi oyo oys rbb rbi rbk rbo rbr rbs rib rii rik rio rir ris riv riy rkb rkk rko rks rkv rky rob roi rok roo ror ros rov roy rrb rri rrk rrr rrs rsb rsi rsk rso rsr rss rsv rvb rvi rvo rvr rvs rvv rvy ry- ryk ryo ryr rys ryy sbb sbi sbk sbo sbr sbs sbv sby sib sii sik sio sir sis siv sk- skb ski skk sko skr sks sky sob soi sok soo sor sos sov soy sr- srb sri srk sro srr srs srv sry ss- ssb ssi ssk sso ssr sss ssv svb svi svk svo svr svs svv svy sy- syb syi syk syr sys vbi vbk vbo vbr vbs vbv vi- vib vii vik vio vir vis viv viy vkb vob voi vok voo vor vos vov voy vrb vri vrk vrr vrs vry vsb vsi vsk vso vsr vss vsv vvb vvi vvo vvr vvs vvv ybi ybr ybs yby yii yio yir yis yki ykk yob yoi yok yoo yor yos yoy yro yrs ysb ysi ysk yso ysr yss ysy yvi yvo yvr yvy yyb yys yyy

bbbb bbbs bboy bbyo bibb bibi bibo bibs biis biko bio- bioi bios birb biri birk biro birr birs biry bis- bisk biso biss bisy bivi bivy biys bkry bobb bobi bobo bobs boby boi- boii bois boki boko boks boob book boor boos bor- bori bork boro borr bors bory bosi bosk boso boss bovi bovo bovy boyi boyo boys brik brio bris brkb brob brok broo bror bros brrr brrs brsb brsr brvi bry- bryk bryo bsos byik byki byob byoi byos byrk bysb bysi byso byss bysy i-by ibis ibos ibri ibro ibss ibyi iiii iiio iiis iioi iioo iios iirs iisi iisr ikki ikko ikky ikoo ikri iobi ioby ioii ioio ioko iooi iooo ioos iori iors ioso irby iri- irio iris iriy irki irks irob irov irri irrs irvs isis isko iso- isok isor isos isri issi isso issr isss issy isys ivbv ivor ivrs ivry ivys iyos k-os kbbb kbbi kbbk kbbo kbbr kbbs kbib kbik kbio kbis kbiy kbkb kbkk kbko kbkr kbkv kbky kbob kboi kbok kboo kbos kbov kbrb kbri kbrk kbro kbrv kbry kbsb kbsi kbsk kbso kbsr kbss kbsv kbsy kbvb kbvo kbvr kbyb kbyi kbyo kbyr kbys kibb kibi kibo kibr kibs kiby kiii kiik kiis kiki kikk kiko kikr kioi kiok kioo kirb kiri kirk kiro kirr kirs kirv kisi kisk kiso kisr kiss kisv kisy kivi kivy kiyi kiyk kiys kkbb kkbi kkbo kkbr kkbs kkik kkkk kkob kkoo kkor kkov kkoy kkrb kkrk kkro kkrr kkrs kkrv kksi kksr kkss kkvr kkvv kkys kkyy kobb kobi kobk kobo kobr kobs koby koii koir koiv kokb koki kokk koko kokr koks koky koob kooi kook kooo koor koos koov korb kori kork koro korr kors korv kos- kosb kosi koso kosr koss kosy kovi kovk kovo kovr koyo koyy krbb krbi krbk krbr krib krik krio kris kriv krki krkk krko krkr krks krkv krky krob kroi krok kroo kror kros krov kroy krrb krri krrk krro krrr krrs krry krsk krsr krss krsv krsy krvb krvi krvk krvo krvr krvs krvv kryk kryo kryy ksbi ksbr ksbs ksbv ksby ksib ksii ksik ksir ksis ksiv ksiy kskb kskk ksko kskr ksks ksky ksob ksoi ksok ksoo ksor ksos ksrb ksro ksrr ksrs ksrv ksry kssi ksso kssr ksss ksvi ksvr ksvy ksyr ksyv ksyy kvbr kvik kvir kvis kviv kvob kvoi kvok kvoo kvor kvov kvri kvro kvrr kvrv kvsi kvso kvsr kvss kvsv kvvr kvvs kvvv kvyb kybb kybi kybo kybr kyby kyis kyiv kykk kykr kyks kykv kyky kyok kyoo kyor kyos kyoy kyrk kyro kyrs kysk kysr kyyi kyyk kyyo kyys kyyy obbo obby obis obkb oboi obok obor obos oboy obri obro obsr obss obvi obvs oiii oiko oiks oios oiry okby okir okko okok okor okro oksi okso okyo oobi ooby ooky oooo ooos oory oosi orbb orbi orbo orbs orby ori- orio oris orko oro- orok oror oros oroy orri orro orrs orry orsi orsk orso orsy orvr orvs orys osby osii osik osis oski osoi osoo osor osos osov osro ossb ossi osso ossy ovi- ovis ovo- ovoo oyri oyss rbbb rbbr rbbs rbis rbss rib- ribo ribs riby riis riki rikk rios riri rirs risi risk riso riss rivo rivs riyo rkos rkss rksv rob- robb robi robo robs roby roik roio roir rois roki rokk roko rokr roks roky roob rooi rook roor roos rori rork roro rory rosi roso ross rosy rovi rovo rovs roys rrrr rsbi rsis rsos rvik