beos[7], boss[7], deos[5], dose[5], odes[5], sode[5], sods[5], oses[5],
beo[6], deo[4], ode[4], dos[4], ods[4], sod[4], des[3], ess[3],
ob[5], do[3], od[3], os[3], so[3], es[2],
