obig[8], sogg[7], obis[7], gigs[6], ibis[6], gois[6],
bog[7], gib[6], bio[6], obi[6], gig[5], goi[5], bis[5], sog[5], gis[4],
ob[5], bi[4], go[4], os[3], so[3], si[2],
