efod[9], foso[8], sofo[8], foss[8], deso[5], sodo[5],
efo[7], fes[7], fos[7], sof[7], deo[4], ode[4], odo[4], des[4], oso[3], sos[3],
ef[6], fe[6], de[3], do[3], od[3], eo[2], es[2], se[2], os[2],
