bbb bbg bbi bbn bbs bgb bgg bgi bgn bgs bi- bib big bii bin bis bnb bng bni bnn bns bsb bsg bsi bsn bss gbg gbi gbn gbs ggb ggg ggi ggn ggs gib gig gii gin gis gnb gni gnn gns gsb gsg gsi gsn gss ibb ibg ibi ibn ibs igb igg igi ign igs iib iii iin iis in- inb ing ini inn ins is- isb isg isi isn iss n-i nbb nbg nbi nbn nbs ngb ngg ngi ngn ngs nib nig nii nin nis nnb nng nni nnn nns nsb nsg nsi nsn nss sbb sbg sbi sbn sbs sgb sgg sgi sgn sgs sib sig sii sin sis snb sng sni snn sns ss- ssb ssg ssi ssn sss