bbb bbi bbn bbo bbr bbw bi- bib bii bin bio bir biw bnb bni bnn bno bnr bnw bob boi bon boo bor bow brb bri brn bro brr brw bwb bwi bwo bwr ibb ibi ibn ibo ibr ibw iib iii iin iio iir iiw in- inb ini inn ino inr io- iob ioi ion ioo ior iow ir- irb iri irn iro irr iwb iwi iwo iwr iww n-i nbb nbi nbn nbo nbr nbw nib nii nin nio nir nnb nni nnn nno nnw no- nob noi non noo nor now nrb nri nrn nro nrr nrw nwb nwi nwn nwo nwr o-i ob- obb obi obn obo obr obw oib oii oin oio oir on- onb oni onn ono onr oo- oob ooi oon ooo oor oow or- orb ori orn oro orr owb owi own owo oww rbb rbi rbn rbo rbr rbw rib rii rin rio rir rnb rni rnn rno rnr rnw rob roi ron roo ror row rrb rri rrn rrr rwb rwi rwr wbb wbi wbn wbo wbr wbw wib wii win wir wn- wnn wno wnw wob woi won woo wor wow wr- wri wrn wro wrr wrw wwi wwn wwo www