bbb bbg bbi bbn bbo bbs bgb bgg bgi bgn bgo bgs bi- bib big bii bin bio bis bnb bng bni bnn bno bns bob bog boi bon boo bos bsb bsg bsi bsn bso bss gbg gbi gbn gbo gbs ggb ggg ggi ggn ggo ggs gib gig gii gin gio gis gnb gni gnn gno gns gob gog goi gon goo gos gsb gsg gsi gsn gso gss ibb ibg ibi ibn ibo ibs igb igg igi ign igo igs iib iii iin iio iis in- inb ing ini inn ino ins io- iob iog ioi ion ioo ios is- isb isg isi isn iso iss n-i nbb nbg nbi nbn nbo nbs ngb ngg ngi ngn ngo ngs nib nig nii nin nio nis nnb nng nni nnn nno nns no- nob nog noi non noo nos nsb nsg nsi nsn nso nss o-i ob- obb obg obi obn obo obs ogg ogi ogn ogo ogs oib oii oin oio ois on- onb ong oni onn ono ons oo- oob oog ooi oon ooo oos os- osb osg osi osn oso oss sbb sbg sbi sbn sbo sbs sgb sgg sgi sgn sgo sgs sib sig sii sin sio sis snb sng sni snn sno sns sob sog soi son soo sos ss- ssb ssg ssi ssn sso sss