bbbb bbin bibb bibi bibo biin biji bin- bini binn bino bio- bioi bion birb biri birn biro birr bjni bnib bnin bnor bnrr bobb bobi bobo boi- boii boin boji bojo boni bonn bono boob boon boor bor- bori borj born boro borr brin brio brnj brno brob bron broo bror brrr i-no ibon ibri ibro iiii iiio iino iioi iioo ijji inbo inji inni inno innr ino- inoi inoj inon inor inri inro iobi ioii ioio ioni ionn iono iooi iooo iori iri- irin irio irob iron irri j-ro jbob jibb jibi jiji jini jinn jion jiri jiro jobo join joio joji jojo joni jonn jono joon joor jorn joro jrbr n-ii nbbj nbbo nibi nibo niir niji nini nino nion nioo niro njoi nnnn nobi nobo noib noin noio noir noji non- noni nonn nono noo- noob nooj noon nooo noor nor- norb nori norn noro norr nron obbo obin oboi obon obor obri obro oiii oion onir onni onno onon onor oobi ooij ooji oooo orbb orbi orbo ori- orin orio orji orni orno oro- oron oror orri orro rbbb rbbr rib- ribo riin riji rijn rijo rinn rino rion riri rnbr rnin rob- robb robi robo roin roio roir roji rojo roni rono roob rooi roon roor rori roro rrrr