obis[7], boss[7], biss[6], idos[5], iods[5], sods[5], ossi[5], diss[4],
bio[6], obi[6], bis[5], ido[4], iod[4], dos[4], ods[4], sod[4], dis[3], iss[3],
ob[5], bi[4], do[3], od[3], os[3], so[3], si[2],
