-nik bbbb bbin bibb bibi bibo biin biko bin- bini bink binn bino bio- bioi bion birb biri birk birn biro birr bnib bnin bnor bnrr bobb bobi bobo boi- boii boin boki bokn boko boni bonk bonn bono boob book boon boor bor- bori bork born boro borr brik brin brio brkb brno brob brok bron broo bror brrr i-no ibon ibri ibro iiii iiio iino iioi iioo ikin ikki ikko ikon ikoo ikri inbo inki inni inno innr ino- inoi inon inor inri inro iobi ioii ioio ioko ioni ionn iono iooi iooo iori iri- irin irio irki irob iron irri kbbb kbbi kbbk kbbo kbbr kbib kbik kbio kbkb kbkk kbko kbkr kbnn kbno kbnr kbob kboi kbok kbon kboo kbrb kbri kbrk kbrn kbro kibb kibi kibo kibr kiii kiik kiki kikk kiko kikr kin- kinb kini kink kinn kino kioi kiok kion kioo kirb kiri kirk kirn kiro kirr kkbb kkbi kkbn kkbo kkbr kkik kkin kkkk kknb kkni kknn kkno kkob kkon kkoo kkor kkrb kkrk kkrn kkro kkrr knbb knbn knbr knib knik knin knir knki knkk knnb knnk knnr knob knok knon knor knrb knrk knro kobb kobi kobk kobn kobo kobr koii koin koir kokb koki kokk kokn koko kokr koni konk kono koob kooi kook koon kooo koor korb kori kork korn koro korr krbb krbi krbk krbr krib krik krin krio krki krkk krkn krko krkr krnb krni krnk krnn krno krob kroi krok kroo kror krrb krri krrk krrn krro krrr n-ii nbbo nibi nibo niir niki niko nini nino nion nioo niro nkio nkok nkor nnnn nobi nobo noib noik noin noio noir noki noko non- noni nonn nono noo- noob nook noon nooo noor nor- norb nori nork norn noro norr nron obbo obin obkb oboi obok obon obor obri obro oiii oiko oink oion okir okko okni okno okok okon okor okro onir onni onno onon onor oobi oooo orbb orbi orbo ori- orin orio orko orni orno oro- orok oron oror orri orro rbbb rbbr rib- ribo riin riki rikk rink rinn rino rion riri rnbr rnin rob- robb robi robo roik roin roio roir roki rokk roko rokr roni ronk rono roob rooi rook roon roor rori rork roro rrrr