bbb bbi bbk bbo bbr bbs bi- bib bii bik bio bir bis bkb bkk bko bkr bks bob boi bok boo bor bos brb bri brk bro brr brs bsb bsi bsk bso bsr bss ibb ibi ibk ibo ibr ibs iib iii iio iir iis ikb iki ikk iko ikr iks io- iob ioi ioo ior ios ir- irb iri irk iro irr irs is- isb isi isk iso isr iss kbb kbi kbk kbo kbr kbs kib kii kik kio kir kis kkb kki kkk kkr kks kob koi kok koo kor kos kri krk kro krr krs ksb ksi ksk kso ksr kss o-i ob- obb obi obk obo obr obs oib oii oik oio oir ois okb oki okk oko okr oks oo- oob ooi ook ooo oor oos or- orb ori ork oro orr ors os- osb osi osk oso osr oss rbb rbi rbk rbo rbr rbs rib rii rik rio rir ris rkb rkk rko rks rob roi rok roo ror ros rrb rri rrk rrr rrs rsb rsi rsk rso rsr rss sbb sbi sbk sbo sbr sbs sib sii sik sio sir sis sk- skb ski skk sko skr sks sob soi sok soo sor sos sr- srb sri srk sro srr srs ss- ssb ssi ssk sso ssr sss

bbbb bbbs bibb bibi bibo bibs biis biko bio- bioi bios birb biri birk biro birr birs bis- bisk biso biss bobb bobi bobo bobs boi- boii bois boki boko boks boob book boor boos bor- bori bork boro borr bors bosi bosk boso boss brik brio bris brkb brob brok broo bror bros brrr brrs brsb brsr bsos ibis ibos ibri ibro ibss iiii iiio iiis iioi iioo iios iirs iisi iisr ikki ikko ikoo ikri iobi ioii ioio ioko iooi iooo ioos iori iors ioso iri- irio iris irki irks irob irri irrs isis isko iso- isok isor isos isri issi isso issr isss k-os kbbb kbbi kbbk kbbo kbbr kbbs kbib kbik kbio kbis kbkb kbkk kbko kbkr kbob kboi kbok kboo kbos kbrb kbri kbrk kbro kbsb kbsi kbsk kbso kbsr kbss kibb kibi kibo kibr kibs kiii kiik kiis kiki kikk kiko kikr kioi kiok kioo kirb kiri kirk kiro kirr kirs kisi kisk kiso kisr kiss kkbb kkbi kkbo kkbr kkbs kkik kkkk kkob kkoo kkor kkrb kkrk kkro kkrr kkrs kksi kksr kkss kobb kobi kobk kobo kobr kobs koii koir kokb koki kokk koko kokr koks koob kooi kook kooo koor koos korb kori kork koro korr kors kos- kosb kosi koso kosr koss krbb krbi krbk krbr krib krik krio kris krki krkk krko krkr krks krob kroi krok kroo kror kros krrb krri krrk krro krrr krrs krsk krsr krss ksbi ksbr ksbs ksib ksii ksik ksir ksis kskb kskk ksko kskr ksks ksob ksoi ksok ksoo ksor ksos ksrb ksro ksrr ksrs kssi ksso kssr ksss obbo obis obkb oboi obok obor obos obri obro obsr obss oiii oiko oiks oios okir okko okok okor okro oksi okso oobi oooo ooos oosi orbb orbi orbo orbs ori- orio oris orko oro- orok oror oros orri orro orrs orsi orsk orso osii osik osis oski osoi osoo osor osos osro ossb ossi osso rbbb rbbr rbbs rbis rbss rib- ribo ribs riis riki rikk rios riri rirs risi risk riso riss rkos rkss rob- robb robi robo robs roik roio roir rois roki rokk roko rokr roks roob rooi rook roor roos rori rork roro rosi roso ross rrrr rsbi rsis rsos s-ib s-ii s-os sbbs sbor sbrk sbsi sibi sibo sibs siik siki siko sikr siks sior sios siri sirk siro sirr sirs sisi sisk siss skik skio skir skis skor skss sobo sobr sobs soik soir sois soki sokk soko sook soor soos sorb sori soro sorr sors sosi soso soss srib sris sros ssbr ssis ssri ssrs sssb sssi ssss

b-r-k bbook bibbo bibbs bibio bibis bibos bibri biisk bikok bioko bioss birks biros birrs birsk bisko bisks bo-bo bobbi bobik bobko bobok bobos bobr bobri boios boiro bokko bokok bokor boobs booki booko books boors borbo borik borio boris borko borks boro- borok boroo boros borro borsi borsk bosio bosko bosks bosor bossi bossk bosso brisb brisi brisk briss brobo brobs brook broos bross brrrr ibibo ibook ibrik ibros iiiii iikss iiris iisir ikiss ikobo ikoro ikosi iksir ioooi ioooo iorio irbis iriki irios iris- iriss irobo iroko irori irssi is-is isios isiro isisi isoko isrib issor k-rob kibbi kibbo kibi- kibor kibos kiiki kikis kikki kikko kikoi kikos kioko kiosk kiris kirki kirks kiros kirsi kisii kisir kisko kisos kiss- kissi ko-ko kobos kobri koiri koisi kokir kokis kokki kokko kokoi kokor kokos koksi kooki kooks koori korbo korki koror koros korri korro korsi korso kosik kosir kosis koski kosor kossi kosso kribi krios kriss kroos kross krsko o-r-b oboro obosi obrok oiko- oikos okobo okoki okoro ooioo ooooo orbis oribi orobo orosi oroso orris orsis osiki ososo ossi- ossis ossos ribbi ribo- rikki risks risso ro-ro robbi robbo robbs robik robo- robor rokki rokkk rokos rooks roosi rorik rosis roski rosko rossi rosso rosss s-iii s-k-o s-o-r sibir sibor sibos sikki sikri sirik sirio siris sirki sirok siror siros sirsi sisis siski sisko sisor sissi sk-ii skibo skiis skios skiri skirr skoki skoko skoob skors skrik so-so sobko sobor sobri soirs sokos sooks soori soosi sorbo sorbs sorik sorio sorok soror soros sorsk sorso soss- sossi sroki sssrb sssss

bbbbbb bibiri bibrik bikoro biobor biribi birori bisoro bobbio bobbos bobiri bobrok bokkos bokoro booboo bookii borbor boriki boroko bororo borosi borris bososo bribir bribri briski brisks brisok brokkr brooks broski brosso ibibio ibooks ibriks iiooio ikkiss ikoiko irokos kibbor kibiro kibisi kiboko kikiki kikkik kikois kikoko kikori kiokio kiosko kiosks kiriko kiriri kirkos kirobo kiroro kisoro kissos kobior koboko kobori kokori kokoro kookoo korkor kororo korosi korrio kosior kossos krikor krisis krokos oborki obroki obroks obsorb oksoko ookroo oooooo orbiso oribis orissi orobii orrios