-ing bbbb bbin bbng bbox bgon bibb bibi bibo bigb bigg bign bigo biin bin- bing bini binn bino bio- biog bioi bion biox bixi bnib bnin bobb bobi bobo bogg bogi bogo boi- boii boin bong boni bonn bono boob boog boon boox 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 i-go i-no ibon ibox igbo igni igno igon igoo iiii iiio iino iioi iioo inbo ingo inig inni inno ino- inoi inon inox iobi ioii ioio ioni ionn iono iooi iooo ixxi n-ii nbbo ngio ngon nibi nibo nigg nigo ning nini nino niog nion nioo nixi nngn nnnn nobi nobo nogg nogo noib noin noio noix non- nong noni nonn nono nonx noo- noob noon nooo obbo obin obix oboi obon obox ogb oggi ogin ogni ogog ogoi ogon oigo oiii oion ongi ongo onix onni onno onon oobi oooo oxi- oxo- oxon oxox oxxo xbin xbox xggi xibo xiii xing xion xixi xong xoxo xxii xxix xxxi xxxo xxxx