bbb bbg bbi bbn bbo bbr bbx bgb bgg bgi bgn bgo bgr bgx bi- bib big bii bin bio bir bix bnb bng bni bnn bno bnr bnx bob bog boi bon boo bor box brb brg bri brn bro brr brx bxb bxi bxn bxo bxx gbg gbi gbn gbo gbr gbx ggb ggg ggi ggn ggo ggr gib gig gii gin gio gir gnb gni gnn gno gnr gob gog goi gon goo gor gox grb grg gri grn gro grr grx ibb ibg ibi ibn ibo ibr ibx igb igg igi ign igo igr iib iii iin iio iir iix in- inb ing ini inn ino inr inx io- iob iog ioi ion ioo ior ir- irb irg iri irn iro irr irx ixi ixn n-i nbb nbg nbi nbn nbo nbr nbx ngb ngg ngi ngn ngo nib nig nii nin nio nir nix nnb nng nni nnn nno no- nob nog noi non noo nor nox nrb nrg nri nrn nro nrr nrx o-i ob- obb obg obi obn obo obr obx ogg ogi ogn ogo ogx oib oii oin oio oir on- onb ong oni onn ono onr onx oo- oob oog ooi oon ooo oor oox or- orb org ori orn oro orr orx ox- oxb oxi oxn oxo oxx rbb rbg rbi rbn rbo rbr rbx rgb rgg rgi rgn rgo rgr rgx rib rig rii rin rio rir rix rnb rng rni rnn rno rnr rob rog roi ron roo ror rox rrb rrg rri rrn rrr rxr xbr xbx xgi xii xin xio xix xno xog xoi xon xoo xor xox xrx xxi xxo xxx