efem[9], efod[9], efom[9], demo[6],
fee[7], efo[7], dem[5], dom[5], mod[5], odm[5], mee[4], deo[4], ode[4],
ef[6], fe[6], de[3], em[3], me[3], do[3], od[3], om[3], ee[2], eo[2],
