-nik bbbb bbin bibb bibi bibo biin biko bin- bini bink binn bino bio- bioi bion birb biri birk birn biro birr bivi 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 bovi bovo brik brin brio brkb brno brob brok bron broo bror brrr brvi 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 irov irri ivbv ivin ivon ivor kbbb kbbi kbbk kbbo kbbr kbib kbik kbio kbkb kbkk kbko kbkr kbkv kbnn kbno kbnr kbnv kbob kboi kbok kbon kboo kbov kbrb kbri kbrk kbrn kbro kbrv kbvb kbvo kbvr 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 kirv kivi kkbb kkbi kkbn kkbo kkbr kkik kkin kkkk kknb kkni kknn kkno kkob kkon kkoo kkor kkov kkrb kkrk kkrn kkro kkrr kkrv kkvr kkvv knbb knbn knbr knib knik knin knir kniv knki knkk knnb knnk knnr knob knok knon knor knrb knrk knro knrv knvn knvo knvr kobb kobi kobk kobn kobo kobr koii koin koir koiv kokb koki kokk kokn koko kokr koni konk kono koob kooi kook koon kooo koor koov korb kori kork korn koro korr korv kovi kovk kovo kovr krbb krbi krbk krbr krib krik krin krio kriv krki krkk krkn krko krkr krkv krnb krni krnk krnn krno krnv krob kroi krok kroo kror krov krrb krri krrk krrn krro krrr krvb krvi krvk krvn krvo krvr krvv kvbr kvik kvin kvir kviv kvni kvnn kvno kvnr kvob kvoi kvok kvon kvoo kvor kvov kvri kvro kvrr kvrv kvvn kvvr kvvv n-ii nbbo nibi nibo niir niki niko nini nino nion nioo niro nirv nivo nivr nkio nkok nkor nnnn nobi nobo noib noik noin noio noir noki noko non- noni nonn nono noo- noob nook noon nooo noor noov nor- norb nori nork norn noro norr norv nov- novi novo nron nvir obbo obin obkb oboi obok obon obor obri obro obvi 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 orvr ovi- ovni ovo- ovon ovoo rbbb rbbr rib- ribo riin riki rikk rink rinn rino rion riri rivo 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 rovi rovo rrrr rvik viii viik viki viko vini vink vino vion virb viri virk viro virr vivi vivo vkor vnir voin voio voir voni vonk vonn voor vor- vori voro vovk vrin vrio vrnn vron vvob vvvv