-ing bbbb bbin bbng bgon bibb bibi bibo bigb bigg bign bigo biin bin- bing bini binn bino bio- biog bioi bion bivi bnib bnin bobb bobi bobo bogg bogi bogo boi- boii boin bong boni bonn bono boob boog boon bovi bovo gbbo gbon gggg gibb gigg gigi gign gigo ging gini ginn gino giog gioi gion gnib gnin gnoo gobi gobo gogi gogo goin gon- gong goni gonn gono goog gooi goon govi gvvv i-go i-no ibon igbo igni igno igon igoo iiii iiio iino iioi iioo inbo ingo inig inni inno ino- inoi inon iobi ioii ioio ioni ionn iono iooi iooo ivbv ivig ivin ivon n-ii nbbo ngio ngon nibi nibo nigg nigo ning nini nino niog nion nioo nivo nngn nnnn nobi nobo nogg nogo noib noin noio non- nong noni nonn nono noo- noob noon nooo noov nov- novi novo obbo obin oboi obon obvi ogb oggi ogin ogni ogog ogoi ogon oigo oiii oion ongi ongo onni onno onon oobi oooo ovi- ovni ovo- ovon ovoo vigo viii ving vini vino vion vivi vivo vnbg voin voio voni vonn voog vvob vvog vvvv