b-u bbb bbd bbi bbk bbo bbr bbu bdb bdd bdi bdk bdo bdr bdu bi- bib bid bii bik bio bir biu bkb bkk bko bkr bob bod boi bok boo bor bou brb brd bri brk bro brr bru bub bud bui buk buo bur buu dbb dbd dbi dbk dbo dbr dbu ddb ddd ddi ddk ddo ddr ddu di- dib did dii dik dio dir diu dkb dki dkk dko dkr dku dob dod doi dok doo dor dou drb drd dri drk dro drr dru dub dud dui duk duo dur i-d ibb ibd ibi ibk ibo ibr ibu idb idd idi idk ido idr idu iib iid iii iio iir iiu ikb iki ikk iko ikr iku io- iob iod ioi ioo ior iou ir- irb ird iri irk iro irr iru iu- iub iud iui iur kbb kbd kbi kbk kbo kbr kbu kdb kdk kdo kdr kdu kib kid kii kik kio kir kiu kkb kki kkk kkr kku kob kod koi kok koo kor kou krd kri krk kro krr kru kub kud kui kuk kur kuu o-i ob- obb obd obi obk obo obr obu odb odd odi odo odr odu oib oid oii oik oio oir oiu okb okd oki okk oko okr oku oo- oob ood ooi ook ooo oor or- orb ord ori ork oro orr oru ou- oud oui ouk ouo our rbb rbd rbi rbk rbo rbr rbu rdb rdd rdi rdo rdr rdu rib rid rii rik rio rir rkb rkk rko rku rob rod roi rok roo ror rou rrb rrd rri rrk rrr rru rub rud rui ruk ruo rur ruu ubb ubi ubk ubo ubr ubu udb udd udi udk udo udr udu uib uid uii uio uir uiu ukb uki ukk ukr uku uob uod uok uoo uor ur- urb urd uri urk uro urr uru uur uuu

bbbb bbdd bbdo bd-r bdii bibb bibi bibo bidi bido bidr bidu biko biku bio- bioi biou birb bird biri birk biro birr biru bobb bobi bobo bobu bodb bodi bodo bodu boi- boid boii boiu boki boko boku boob bood book boor bor- bord bori bork boro borr boru boud bouk bour brdo brid brik brio brkb brob brod brok broo bror brou brrr brud bubb bubi bubo bubu budb budd budi budo budu buid buik buir buiu buki bukk buko buku bur- burb burd buri burk buro burr buru d-bo dddd ddub dibb dibo didi dido didu diii diki diko diku dior diou dird dirk dirr dkid dobb dobi dobu dod- dodd dodi dodo doid doki doko doob dood dook door dord dori dork doro dorr doru doub doud douk dour drib drob drod drou drub drui druk druu dub- dubb dubu dudd dudo dudu duid duir duki duku duo- duri durk duro duru duur ibdo ibid ibrd ibri ibro iddo idid idio idir idku idro idub iduo iiii iiio iioi iioo ikid ikki ikko ikoo ikri ikuo iobi iod- iodd iodo ioii ioio ioko iooi iooo iori irdo iri- irid irio irki irob irod irri iuiu k-id kbbb kbbd kbbi kbbk kbbo kbbr kbbu kbdb kbdi kbdo kbdr kbib kbid kbik kbio kbiu kbkb kbkk kbko kbkr kbob kbod kboi kbok kboo kbrb kbrd kbri kbrk kbro kbru kbub kbud kbuk kbur kbuu kdbb kdbi kdbr kddb kddd kddi kddk kddr kdio kdkb kdkd kdkk kdko kdkr kdok kdrb kdri kdro kdub kdur kibb kibi kibo kibr kibu kidb kidd kidi kidk kido kidr kidu kiid kiii kiik kiiu kikd kiki kikk kiko kikr kiku kiod kioi kiok kioo kiou kirb kiri kirk kiro kirr kiru kiur kiuu kkbb kkbd kkbi kkbo kkbr kkdd kkdo kkid kkik kkkk kkob kkoo kkor kkrb kkrk kkro kkrr kkuu kobb kobi kobk kobo kobr kobu kodi kodk kodo kodu koii koir kokb koki kokk koko kokr koku koob kooi kook kooo koor koou korb kord kori kork koro korr koru koub koui kour kouu krbb krbd krbi krbk krbr krdd krdo krdr krdu krib krid krik krio krkd krki krkk krko krkr krku krob krod kroi krok kroo kror krrb krri krrk krro krrr krui kruk krur kubb kubd kubo kubr kubu kudd kudi kudo kudu kuik kuki kukk kuku kuok kuoo kurb kurd kuri kurk kuro kurr kuru kuub kuuk kuur kuuu obbo obid obkb oboi obok obor obri obro odbo oddd oddi odio odir odiu odoo odor odou odur oido oiii oiko okir okko okok okor okro okur oobi oodi ooid ooku oooo oord orbb orbi orbo orbu ordo ordu ori- orid orio orko oro- orok oror orri orro orub ouii ouir our- ouro ouu- rbbb rbbr rdio rib- ribo ribu ridd ridi rido riki rikk riku riou riri rob- robb robi robo robu rodd rodi rodo roid roik roio roir roiu roki rokk roko rokr roku roob rood rooi rook roor rori rork roro roru roub roud rouk rrrr rubb rubi rubu rudd rudi rudo ruid ruki rukk ruku ruok rurd ruri ruro ruru ruud ubbi ubbo ubid ubii ubik ubir ubod ubud uddi udid udir udoo uduk uirr ukko ukok ukur uor- urbi urdu urib urik uriu uro- urok uroo urri uruk urur uuri uuuu

b-r-k bbook bdoor bibbo bibio bibod bibri biddu bidor bidri biduk bidur bikok bikou bioko birdo birdu birou birur bo-bo bobbi bobik bobko bobok bobr bobri bodd- bodio bodir bodiu bodor bodri boiro bokko bokod bokok bokor booki booko boord booru borbo bordi bordo borid borik borio borko borku boro- borod borok boroo borou borro boudu bouko bourd bouri bridi briod briou brobo brodd brodo broid brood brook broud brouk brrrr brud- bruik bruiu bruri buddu budki budko budur buiki buird bukid bukk- bukki bukor buord burdi burio buroo burri burro burru burud buruk d-rod d-rok ddddd ddruk dibri diddu didio didok dioid dioro do-do dobki dobok dobri dobro dodoo dodro doido dokdo dokki dokri dokuo doodo dooku dorid dorio dorud doruk douro drbob dridu driki driko drobo droid drood drook drori drouk