bbbb bibb bibi bibo bigb bigg bigo bigt bio- biog bioi biot bipp bito bitt bobb bobi bobo bogg bogi bogo bogt boi- boii boit boob boog boop boot bopp botb boti boto bott bpot bpti btbp btob bttb gbbo ggbt gggg ggpo gibb gigg gigi gigo giog gioi giop gipi gipp gito gobi gobo gogi gogo goip goit goog gooi goop goot gopi gopo goti goto gott gpgp gpip gpot gtip gtop i-go ibot ibtb igbo igoo igot iiii iiio iiit iioi iioo iiop iitt iobi iogt ioii ioio ioit iooi iooo ioto ipop ippo ipto itgo itoi itoo itto obbo obit oboi obot ogb oggi ogog ogoi oigo oiii oiti oobi oooo ootb ootp opii opio opit opo- oppi oppo opti opto otit oto- otog otoo otpp otti otto pgib pibb pibi pigb pigg pigo pigp pigt piip piob piot pipi pipo pipp piti pito pitt pobo pogg pogo poio poop poot pop- popi popo popp popt poti poto pott ppgi ppib ppig pppo pppp pptt ptop tbit tbtp tibi tigi tiit tiop tip- tipi tipo tipp tipt titi tito titp titt tobi tobo tobt togo togt toit toot top- topi topo topp topt toti toto tott tpbg tppp tptp ttbb ttop tttt