bbb bbg bbi bbo bbr bby bgb bgg bgi bgo bgr bgv bi- bib big bii bio bir biv biy bob bog boi boo bor bov boy brb brg bri bro brr brv bry bvb bvg bvi bvo bvr bvv by- byg byi byo byr gbg gbi gbo gbr gbv gby ggb ggg ggi ggo ggr ggv gib gig gii gio gir giv giy gob gog goi goo gor gov goy grb grg gri gro grr grv gry gvb gvg gvi gvo gvr gy- gyb gyo gyr i-v ibb ibg ibi ibo ibr ibv iby igb igg igi igo igr igy iib iii iio iir io- iob iog ioi ioo ior iov ir- irb irg iri iro irr irv iry ivb ivg ivi ivo ivr ivv ivy iyo iyr iyy o-i ob- obb obg obi obo obr obv oby ogg ogi ogo ogy oib oii oio oir oiv oo- oob oog ooi ooo oor oov or- orb org ori oro orr orv ory ov- ovb ovi ovo ovv oyi oyo rbb rbg rbi rbo rbr rgb rgg rgi rgo rgr rgv rib rig rii rio rir riv riy rob rog roi roo ror rov roy rrb rrg rri rrr rvb rvg rvi rvo rvr rvv rvy ry- ryg ryo ryr ryy vbg vbi vbo vbr vbv vgg vgo vgr vi- vib vig vii vio vir viv viy vob vog voi voo vor vov voy vrb vrg vri vrr vry vvb vvg vvi vvo vvr vvv vyg ybg ybi ybr yby ygo yig yii yio yir yob yog yoi yoo yor yoy yrg yro yvi yvo yvr yvy yyb yyg yyy