bbbb bbin bibb bibi bibo biin bimo bin- bini binn bino bio- bioi bion birb biri birn biro birr bmir bmmi bnib bnim bnin bnor bnrr bobb bobi bobo boi- boii boim boin bomb bomi boni bonn bono boob boom boon boor bor- bori borm born boro borr brim brin brio brno brob brom bron broo bror brrm brrr i-no ibbm ibim ibon ibri ibro iiii iiio iinm iino iioi iioo imbi imin imir immi immo imno imon imri imro imrr inbo inni inno innr ino- inoi inon inor inri inro iobi ioii ioio iomo ioni ionn iono iooi iooo iori irbm iri- irin irio irmo irob iron irri mbim mbio miii miin miio mim- mimi mimo mini minn mino mio- mion miri miro mirr mmii mmmm mmor mnbb mnin mobb mobi mobo moii moin moio moir momi momo mon- moni monn mono moob moon moor morb mori morn moro mrbb mrbm mron n-ii nbbo nibi nibm nibo niir nimb nimi nimo nimr nini nino nion nioo niro nmon nmri nnnn nobi nobm nobo noib noin noio noir nom- nomi nomo non- noni nonn nono noo- noob noon nooo noor nor- norb nori norm norn noro norr nron obbo obin oboi obon obor obri obro oiii oimb oion ombo omim omin omio omn- omni omo- omoi omon omoo omor omri omro onir onni onno onon onor oobi oooo orbb orbi orbo ori- orin orio ormn ormo orni orno oro- orom oron oror orri orro rbbb rbbr rib- ribo riin rimi rimm rimo rinn rino riom rion riri rmon rnbr rnin rob- robb robi robo roin roio roir romb romi romm romo roni rono roob rooi room roon roor rori roro rrrr