ggg ggi ggo ggr ggs ggv gig gii gio gir gis giv gog goi goo gor gos gov grg gri gro grr grs grv gsg gsi gso gsr gss gsv gvg gvi gvo gvr gvs i-v igg igi igo igr igs iii iio iir iis io- iog ioi ioo ior ios iov ir- irg iri iro irr irs irv is- isg isi iso isr iss isv ivg ivi ivo ivr ivs ivv o-i ogg ogi ogo ogs oii oio oir ois oiv oo- oog ooi ooo oor oos oov or- org ori oro orr ors orv os- osg osi oso osr oss osv ov- ovi ovo ovs ovv rgg rgi rgo rgr rgs rgv rig rii rio rir ris riv rog roi roo ror ros rov rrg rri rrr rrs rsg rsi rso rsr rss rsv rvg rvi rvo rvr rvs rvv sgg sgi sgo sgr sgs sgv sig sii sio sir sis siv sog soi soo sor sos sov sr- srg sri sro srr srs srv ss- ssg ssi sso ssr sss ssv svg svi svo svr svs svv vgg vgo vgr vgs vi- vig vii vio vir vis viv vog voi voo vor vos vov vrg vri vrr vrs vsg vsi vso vsr vss vsv vvg vvi vvo vvr vvs vvv