bbb bbg bbi bbm bbo bbt bgb bgg bgi bgm bgo bgt bi- bib big bii bim bio bit bmb bmg bmi bmm bmo bmt bob bog boi bom boo bot btb btg bti btm bto btt gbg gbi gbm gbo gbt ggb ggg ggi ggm ggo ggt gib gig gii gim gio git gmb gmg gmi gmm gmo gmt gob gog goi gom goo got gtb gtg gti gtm gto gtt ibb ibg ibi ibm ibo ibt igb igg igi igm igo igt iib iii iim iio iit im- imb img imi imm imo imt io- iob iog ioi iom ioo iot itb itg iti itm ito itt m-o mbb mbg mbi mbm mbo mbt mgb mgi mgm mgo mgt mi- mib mig mii mim mio mit mmb mmg mmi mmm mmo mmt mob mog moi mom moo mot mtb mtg mti mtm mto mtt o-i ob- obb obg obi obm obo obt ogg ogi ogo ogt oib oii oim oio oit om- omb omg omi omm omo omt oo- oob oog ooi oom ooo oot ot- otb otg oti otm oto ott tbb tbg tbi tbm tbo tbt tgb tgg tgi tgm tgo tgt tib tig tii tim tio tit tmb tmg tmi tmm tmo tmt to- tob tog toi tom too tot ttb ttg tti ttm tto ttt