bbb bbg bbi bbo bbr bbt bgb bgg bgi bgo bgr bgt bgz bi- bib big bii bio bir bit biz bob bog boi boo bor bot boz brb brg bri bro brr brt brz btb btg bti bto btr btt btz bzo bzr bzz gbg gbi gbo gbr gbt gbz ggb ggg ggi ggo ggr ggt ggz gib gig gii gio gir git giz gob gog goi goo gor got goz grb grg gri gro grr grt gtb gtg gti gto gtr gtt gzo gzr ibb ibg ibi ibo ibr ibt ibz igb igg igi igo igr igt iib iii iio iir iit io- iob iog ioi ioo ior iot ir- irb irg iri iro irr irt itb itg iti ito itt itz izi izo izz o-i ob- obb obg obi obo obr obt ogg ogi ogo ogt oib oii oio oir oit oiz oo- oob oog ooi ooo oor oot or- orb org ori oro orr ort orz ot- otb otg oti oto otr ott otz ozo ozt ozz rbb rbg rbi rbo rbr rbt rgb rgg rgi rgo rgr rgt rib rig rii rio rir rit riz rob rog roi roo ror rot roz rrb rrg rri rrr rrt rtb rtg rti rto rtr rtt rtz rzb rzo tbb tbg tbi tbo tbr tbt tbz tgb tgg tgi tgo tgr tgt tgz tib tig tii tio tir tit tiz to- tob tog toi too tor tot toz trb trg tri tro trr trt trz ttb ttg tti tto ttr ttt z-g zbb zbr zbt zgb zgg zgi zib zig zio zir zit ziz zo- zob zog zoi zoo zor zot zro ztr zzr zzt zzz