-ing bbbb bbin bbng bgon bibb bibi bibo bigb bigg bign bigo bigt biin bin- bing bini binn bino bint bio- biog bioi bion biot bipp bito bitt bnib bnin bnpp bobb bobi bobo bogg bogi bogo bogt boi- boii boin boit bong boni bonn bono bont boob boog boon boop boot bopp botb boti botn boto bott bpot bpti btbp btob bttb gbbo gbon ggbt gggg ggpo gibb gigg gigi gign gigo ging gini ginn gino giog gioi gion giop gipi gipp gito gnib gnin gnip gnit gnoo gnti gntp gobi gobo gogi gogo goin goip goit gon- gong goni gonn gono goog gooi goon goop goot gopi gopo goti goto gott gpgp gpip gpot gtip gtop i-go i-no ibon ibot ibtb igbo igni igno igon igoo igot iiii iiio iiit iino iioi iioo iiop iitt inbo ingo inig init inni inno ino- inoi inon inot inp- inpi inpp inpt intg inti intn into intp iobi iogt ioii ioio ioit ioni ionn iono iooi iooo ioto ipin ipop ippo ipto itgo itin itno itoi iton itoo itto n-ii nbbo nbpp nbti ngio ngon ngtn nibi nibo nigg nigo nigt niip niit ning nini nino niog nion nioo nipt nitb niti nito nngn nnit nnnn nnot nnpi nntn nobi nobo nogg nogo nogt noib noin noio noit non- nong noni nonn nono nont noo- noob noon nooo noop noot not- noti noto nott npin nptn ntop ntto obbo obin obit oboi obon obot ogb oggi ogin ogni ogog ogoi ogon oigo oiii oint oion oiti ongi ongo onit onni onno onon onpg onpt ont- onti onto oobi oont oooo ootb ootp opii opin opio opit opng opo- opon oppi oppo opti optn opto otin otit oto- otog oton otoo otpp otti otto pgib pibb pibi pigb pigg pign pigo pigp pigt piip ping pini pinn pino pinp pint piob pion piot pipi pipo pipp piti pito pitt pnin pnon pnot pnpo pnpp pobo pogg pogo poin poio pong poni pono ponp pont poon poop poot pop- popi popo popp popt poti poto pott ppgi ppib ppig pppn pppo pppp pptn pptt ptop tbit tbtp tibi tigi tiit ting tini tinn tino tint tion tiop tip- tipi tipo tipp tipt titi tito titp titt tobi tobo tobt togo togt toit tonb tong toni tonn tono toon toot top- topi topo topp topt toti toto tott tpbg tpon tppp tptp ttbb tton ttop tttt