-ing bbbb bbin bbng bgon bibb bibi bibo bigb bigg bign bigo biin bin- bing bini binn bino bio- biog bioi bion bipp bnib bnin bnpp bobb bobi bobo bogg bogi bogo boi- boii boin bong boni bonn bono boob boog boon boop bopp gbbo gbon gggg ggpo gibb gigg gigi gign gigo ging gini ginn gino giog gioi gion giop gipi gipp gnib gnin gnip gnoo gobi gobo gogi gogo goin goip gon- gong goni gonn gono goog gooi goon goop gopi gopo gpgp gpip i-go i-no ibon igbo igni igno igon igoo iiii iiio iino iioi iioo iiop inbo ingo inig inni inno ino- inoi inon inp- inpi inpp iobi ioii ioio ioni ionn iono iooi iooo ipin ipop ippo n-ii nbbo nbpp ngio ngon nibi nibo nigg nigo niip ning nini nino niog nion nioo nngn nnnn nnpi nobi nobo nogg nogo noib noin noio non- nong noni nonn nono noo- noob noon nooo noop npin obbo obin oboi obon ogb oggi ogin ogni ogog ogoi ogon oigo oiii oion ongi ongo onni onno onon onpg oobi oooo opii opin opio opng opo- opon oppi oppo pgib pibb pibi pigb pigg pign pigo pigp piip ping pini pinn pino pinp piob pion pipi pipo pipp pnin pnon pnpo pnpp pobo pogg pogo poin poio pong poni pono ponp poon poop pop- popi popo popp ppgi ppib ppig pppn pppo pppp