bbb bbg bbi bbm bbn bgb bgg bgi bgm bgn bi- bib big bii bim bin bmb bmg bmi bmm bmn bnb bng bni bnn gbg gbi gbm gbn ggb ggg ggi ggm ggn gib gig gii gim gin gmb gmg gmi gmm gmn gnb gni gnm gnn ibb ibg ibi ibm ibn igb igg igi igm ign iib iii iim iin im- imb img imi imm imn in- inb ing ini inm inn mbb mbg mbi mbm mgb mgi mgm mgn mi- mib mig mii mim min mmb mmg mmi mmm mmn mnb mng mni mnm mnn n-i nbb nbg nbi nbm nbn ngb ngg ngi ngm ngn nib nig nii nim nin nmb nmg nmi nmm nmn nnb nng nni nnm nnn