bbb bbg bbi bbn bbo bbr bbs bgb bgg bgi bgn bgo bgr bgs bi- bib big bii bin bio bir bis bnb bng bni bnn bno bnr bns bob bog boi bon boo bor bos brb brg bri brn bro brr brs bsb bsg bsi bsn bso bsr bss gbg gbi gbn gbo gbr gbs ggb ggg ggi ggn ggo ggr ggs gib gig gii gin gio gir gis gnb gni gnn gno gnr gns gob gog goi gon goo gor gos grb grg gri grn gro grr grs gsb gsg gsi gsn gso gsr gss ibb ibg ibi ibn ibo ibr ibs igb igg igi ign igo igr igs iib iii iin iio iir iis in- inb ing ini inn ino inr ins io- iob iog ioi ion ioo ior ios ir- irb irg iri irn iro irr irs is- isb isg isi isn iso isr iss n-i nbb nbg nbi nbn nbo nbr nbs ngb ngg ngi ngn ngo ngs nib nig nii nin nio nir nis nnb nng nni nnn nno nns no- nob nog noi non noo nor nos nrb nrg nri nrn nro nrr nrs nsb nsg nsi nsn nso nsr nss o-i ob- obb obg obi obn obo obr obs ogg ogi ogn ogo ogs oib oii oin oio oir ois on- onb ong oni onn ono onr ons oo- oob oog ooi oon ooo oor oos or- orb org ori orn oro orr ors os- osb osg osi osn oso osr oss rbb rbg rbi rbn rbo rbr rbs rgb rgg rgi rgn rgo rgr rgs rib rig rii rin rio rir ris rnb rng rni rnn rno rnr rns rob rog roi ron roo ror ros rrb rrg rri rrn rrr rrs rsb rsg rsi rsn rso rsr rss sbb sbg sbi sbn sbo sbr sbs sgb sgg sgi sgn sgo sgr sgs sib sig sii sin sio sir sis snb sng sni snn sno snr sns sob sog soi son soo sor sos sr- srb srg sri srn sro srr srs ss- ssb ssg ssi ssn sso ssr sss