b-u bbb bbi bbk bbn bbo bbr bbu bi- bib bii bik bin bio bir biu bkb bkk bkn bko bkr bnb bni bnk bnn bno bnr bnu bob boi bok bon boo bor bou brb bri brk brn bro brr bru bub bui buk bun buo bur buu ibb ibi ibk ibn ibo ibr ibu iib iii iin iio iir iiu ikb iki ikk iko ikr iku in- inb ini ink inn ino inr inu io- iob ioi ion ioo ior iou ir- irb iri irk irn iro irr iru iu- iub iui iur kbb kbi kbk kbn kbo kbr kbu kib kii kik kin kio kir kiu kkb kki kkk kkn kkr kku kn- kni knk knn kno knr knu kob koi kok kon koo kor kou kri krk krn kro krr kru kub kui kuk kun kur kuu n-i nbb nbi nbk nbn nbo nbr nbu nib nii nik nin nio nir niu nki nkk nkn nko nkr nku nnb nni nnk nnn nno nnu no- nob noi nok non noo nor nou nrb nri nrk nrn nro nrr nru nub nui nuk nun nuo nur nuu o-i ob- obb obi obk obn obo obr obu oib oii oik oin oio oir oiu okb oki okk oko okr oku on- onb oni onk onn ono onr onu oo- oob ooi ook oon ooo oor or- orb ori ork orn oro orr oru ou- oui ouk oun ouo our rbb rbi rbk rbn rbo rbr rbu rib rii rik rin rio rir rkb rkk rko rku rnb rni rnn rno rnr rnu rob roi rok ron roo ror rou rrb rri rrk rrn rrr rru rub rui ruk run ruo rur ruu ubb ubi ubk ubn ubo ubr ubu uib uii uin uio uir uiu ukb uki ukk ukn ukr uku un- unb uni unk unn uno unr unu uob uok uon uoo uor ur- urb uri urk urn uro urr uru uun uur uuu

-nik bbbb bbin bibb bibi bibo biin biko biku bin- bini bink binn bino binu bio- bioi bion biou birb biri birk birn biro birr biru bnib bnin bnor bnrr bobb bobi bobo bobu boi- boii boin boiu boki bokn boko boku boni bonk bonn bono bonu boob book boon boor bor- bori bork born boro borr boru bouk boun bour brik brin brio brkb brno brob brok bron broo bror brou brrr brun bubb bubi bubo bubu buik buin buir buiu buki bukk buko buku bunb buni bunk bunn buno bunu buon bur- burb buri burk burn buro burr buru i-no ibon ibri ibro iiii iiio iino iioi iioo ikin ikki ikko ikon ikoo ikri ikuo inbo inki inni inno innr innu ino- inoi inon inor inou inri inro inui inuk inun iobi ioii ioio ioko ioni ionn iono iooi iooo iori ioun iri- irin irio irki irob iron irri irun iuiu iuno kbbb kbbi kbbk kbbo kbbr kbbu kbib kbik kbio kbiu kbkb kbkk kbko kbkr kbnn kbno kbnr kbnu kbob kboi kbok kbon kboo kbrb kbri kbrk kbrn kbro kbru kbub kbuk kbun kbur kbuu kibb kibi kibo kibr kibu kiii kiik kiiu kiki kikk kiko kikr kiku kin- kinb kini kink kinn kino kinu kioi kiok kion kioo kiou kirb kiri kirk kirn kiro kirr kiru kiun kiur kiuu kkbb kkbi kkbn kkbo kkbr kkik kkin kkkk kknb kkni kknn kkno kknu kkob kkon kkoo kkor kkrb kkrk kkrn kkro kkrr kkuu knbb knbn knbr knbu knib knik knin knir knki knkk knnb knnk knnr knob knok knon knor knou knrb knrk knro knub knui knuk knur kobb kobi kobk kobn kobo kobr kobu koii koin koir kokb koki kokk kokn koko kokr koku koni konk kono koob kooi kook koon kooo koor koou korb kori kork korn koro korr koru koub koui kour kouu krbb krbi krbk krbr krib krik krin krio krki krkk krkn krko krkr krku krnb krni krnk krnn krno krnu krob kroi krok kroo kror krrb krri krrk krrn krro krrr krui kruk krun krur kubb kubo kubr kubu kuik kuin kuki kukk kukn kuku kuni kunk kuno kunr kunu kuok kuon kuoo kurb kuri kurk kuro kurr kuru kuub kuuk kuur kuuu n-ii nbbo nibi nibo niir niiu niki niko niku nini nino nion nioo niou niro niru niur nkio nkok nkor nnnn nobi nobo nobu noib noik noin noio noir noki noko non- noni nonn nono nonu noo- noob nook noon nooo noor nor- norb nori nork norn noro norr noun nour nron nubi nubk nuik nuin nuki nuku nunk nunn nuno nuon nuri nurn nurr nuru nuuk obbo obin obkb oboi obok obon obor obri obro oiii oiko oink oion okir okko okni okno okok okon okor okro okun okur onir onni onno onon onor onur oobi ooku oooo orbb orbi orbo orbu ori- orin orio orko orni orno oro- orok oron oror orri orro orub ouii ouin ouir oun- our- ourn ouro ouu- rbbb rbbr rib- ribo ribu riin riki rikk riku rink rinn rino rion riou riri rnbr rnin rob- robb robi robo robu roik roin roio roir roiu roki rokk roko rokr roku roni ronk rono roob rooi rook roon roor rori rork roro roru roub rouk roun rrrr rrun rubb rubi rubu ruin ruki rukk rukn ruku runi runk runn runo ruok ruri ruro ruru ruun ubbi ubbo ubii ubik ubir ubon uirr ukko ukok ukon ukur uni- unii unik unin unio unir unkn unko unni unno unon unro uor- urbi urib urik urin uriu urni uro- urok uroo urri uruk urun urur uuni uuno uuri uuuu

b-r-k bbook bibbo bibin bibio bibri bikin bikok bikou binub bioko birin birni biron birou birun birur bkorn bo-bo bobbi bobik bobin bobko bobok bobr bobri boink boiro bokin bokko bokok bokor bokun bonin bonio bonki bonon bonou booki booko boonk boorn booru borbo borik borin borio borko borku born- borno bornu boro- borok boron boroo borou borro borun bouin bouko bouni bouri bourn brini brink brinn brion briou brnik