bbb bbi bbk bbo bbr bbs bbt bi- bib bii bik bio bir bis bit biz bkb bkk bko bkr bks bkt bob boi bok boo bor bos bot boz brb bri brk bro brr brs brt brz bsb bsi bsk bso bsr bss bst btb bti btk bto btr bts btt btz bzo bzr bzs bzz ibb ibi ibk ibo ibr ibs ibt ibz iib iii iio iir iis iit ikb iki ikk iko ikr iks ikt io- iob ioi ioo ior ios iot ir- irb iri irk iro irr irs irt is- isb isi isk iso isr iss ist itb iti itk ito its itt itz izi izo izz k-t k-z kbb kbi kbk kbo kbr kbs kbz kib kii kik kio kir kis kit kiz kkb kki kkk kkr kks kkt kob koi kok koo kor kos kot koz kri krk kro krr krs krt ksb ksi ksk kso ksr kss kst ktb ktk kto ktr kts ktt kzo o-i ob- obb obi obk obo obr obs obt oib oii oik oio oir ois oit oiz okb oki okk oko okr oks oo- oob ooi ook ooo oor oos oot or- orb ori ork oro orr ors ort orz os- osb osi osk oso osr oss ost ot- otb oti otk oto otr ots ott otz ozo ozs ozt ozz rbb rbi rbk rbo rbr rbs rbt rib rii rik rio rir ris rit riz rkb rkk rko rks rkt rkz rob roi rok roo ror ros rot roz rrb rri rrk rrr rrs rrt rsb rsi rsk rso rsr rss rst rtb rti rtk rto rtr rts rtt rtz rzb rzo sbb sbi sbk sbo sbr sbs sbt sib sii sik sio sir sis sit sk- skb ski skk sko skr sks skt sob soi sok soo sor sos sot soz sr- srb sri srk sro srr srs srt ss- ssb ssi ssk sso ssr sss sst ssz stb sti stk sto str sts stt stz szi szr tbb tbi tbk tbo tbr tbs tbt tbz tib tii tik tio tir tis tit tiz tkb tkk tko tkr tks tkt tkz to- tob toi tok too tor tos tot toz trb tri trk tro trr trs trt trz tsb tsi tsk tso tsr tss tst ttb tti ttk tto ttr tts ttt tzs zbb zbr zbs zbt zib zik zio zir zis zit ziz zks zo- zob zoi zok zoo zor zos zot zro zrs zsi zst zsz ztr zzr zzs zzt zzz

bbbb bbbs bibb bibi bibo bibs biis biko bio- bioi bios biot birb biri birk biro birr birs birt bis- bisk biso biss bist bito bits bitt bitz bizz bobb bobi bobo bobs boi- boii bois boit boki boko boks boob book boor boos boot booz bor- bori bork boro borr bors bort borz bosi bosk boso boss bost botb boti boto bots bott bozi bozo brik brio bris brit briz brkb brob brok broo bror bros brot broz brrr brrs brsb brsr brst bskt bsos bsts btob btor btrt btss bttb bzrk bzzt bzzz ibis ibos ibot ibri ibro ibss ibtb ibts iiii iiio iiis iiit iioi iioo iios iirs iisi iisr iist iitr iitt ikki ikko ikoo ikri iobi ioii ioio ioit ioko iooi iooo ioos iori iors ioso ioto iri- irio iris irki irks irob irri irrs irti irts isbt isis isit isko iso- isok isor isos isri issi isso issr isss isti isto istr ists itbs itis itko itoi itoo itor itos itri itrs itsi itso itto izki izso izzo k-os kbbb kbbi kbbk kbbo kbbr kbbs kbbt kbbz kbib kbik kbio kbis kbit kbiz kbkb kbkk kbko kbkr kbkz kbob kboi kbok kboo kbos kbot kboz kbrb kbri kbrk kbro kbrt kbrz kbsb kbsi kbsk kbso kbsr kbss kbst kbsz kbtb kbtk kbto kbtr kbts kbtt kbtz kbzi kbzo kbzs kbzt kbzz kibb kibi kibo kibr kibs kibt kibz kiii kiik kiis kiit kiki kikk kiko kikr kikt kikz kioi kiok kioo kiot kioz kirb kiri kirk kiro kirr kirs kirt kisi kisk kiso kisr kiss kist kiti kito kitr kits kitt kitz kizs kizz kkbb kkbi kkbo kkbr kkbs kkbt kkbz kkik kkit kkkk kkob kkoo kkor kkot kkoz kkrb kkrk kkro kkrr kkrs kkrt kkrz kksi kksr kkss kkst kktk kkts kktz kkzz kobb kobi kobk kobo kobr kobs koii koir koit kokb koki kokk koko kokr koks kokz koob kooi kook kooo koor koos koot kooz korb kori kork koro korr kors kort kos- kosb kosi koso kosr koss kost kosz kotb koti kotk koto kotr kots kott kotz kozb kozi kozk kozo kozr kozt krbb krbi krbk krbr krbt krbz krib krik krio kris krit kriz krki krkk krko krkr krks krkz krob kroi krok kroo kror kros kroz krrb krri krrk krro krrr krrs krrt krrz krsk krsr krss krst krti krtk krto krtr krts krtz krzi krzk krzr krzs krzz ksbi ksbr ksbs ksbz ksib ksii ksik ksir ksis ksit ksiz kskb kskk ksko kskr ksks kskz ksob ksoi ksok ksoo ksor ksos ksrb ksro ksrr ksrs ksrt ksrz kssi ksso kssr ksss ksst kssz kstb ksti kstk ksto kstr ksts kstt kstz kszr ktbb ktbr ktbt ktbz ktib ktik ktis ktkb ktkk ktko ktkr ktks ktkt ktkz ktob ktok ktoo ktor ktot ktrb ktri ktrk ktro ktrr ktrs ktrt ktrz ktso ktsr ktst ktti kttk ktto kttr ktts kttt kttz ktzk ktzo ktzr ktzt ktzz kzbb kzbi kzbk kzbr kzbs kzbt kzbz kzio kziz kzkr kzks kzkz kzoi kzoo kzor kzot kzoz kzrb kzrk kzro kzrr kzrs kzrz kzsb kzst kztb kzti kztk kzts kzzb kzzi kzzk kzzo kzzr kzzs kzzt kzzz obbo obis obit obkb oboi obok obor obos obot obri obro obsr obss obst obts oiii oiko oiks oios oirt oist oiti oitz okir okko okok okor okot okro oksi okso okto oobi oooo ooos oort oosi oost ootb oots oozi orbb orbi orbo orbs ori- orio oris orit orko oro- orok oror oros orot oroz orri orro orrs