bbb bbg bbi bbk bbr bby bgb bgg bgi bgk bgr bgz bi- bib big bii bik bir biy biz bkb bkg bkk bkr brb brg bri brk brr bry brz by- byg byi byk byr byz bzr bzz gbg gbi gbk gbr gby gbz ggb ggg ggi ggr ggz gib gig gii gik gir giy giz gkb grb grg gri grk grr gry gy- gyb gyr gzr ibb ibg ibi ibk ibr iby ibz igb igg igi igk igr igy iib iii iir ikb iki ikk ikr ir- irb irg iri irk irr iry iyr iyy izi izy izz k-z kbb kbi kbk kbr kbz kgb kgi kgy kib kig kii kik kir kiz kkb kki kkk kkr kky krg kri krk krr kry kyr kyz kzy rbb rbg rbi rbk rbr rgb rgg rgi rgk rgr rib rig rii rik rir riy riz rkb rkg rkk rky rkz rrb rrg rri rrk rrr ry- ryg ryk ryr ryy ryz rzb rzy ybg ybi ybr yby ybz yig yii yir yiz yki ykk yrg yyb yyg yyy yyz yzb yzr yzy z-g zbb zbr zby zgb zgg zgi zib zig zik zir ziz zzr zzy zzz