bbbb bbin bibb bibi bibo biin bin- bini binn bino bio- bioi bion bipp bnib bnin bnpp bobb bobi bobo boi- boii boin boni bonn bono boob boon boop bopp i-no ibon iiii iiio iino iioi iioo iiop inbo inni inno ino- inoi inon inp- inpi inpp iobi ioii ioio ioni ionn iono iooi iooo ipin ipop ippo n-ii nbbo nbpp nibi nibo niip nini nino nion nioo nnnn nnpi nobi nobo noib noin noio non- noni nonn nono noo- noob noon nooo noop npin obbo obin oboi obon oiii oion onni onno onon oobi oooo opii opin opio opo- opon oppi oppo pibb pibi piip pini pinn pino pinp piob pion pipi pipo pipp pnin pnon pnpo pnpp pobo poin poio poni pono ponp poon poop pop- popi popo popp ppib pppn pppo pppp