pfe[8], efo[7], fes[7], fos[7], sof[7], fez[7], hep[6], hop[6], hes[5], sep[4], osp[4], ezo[3],
ef[6], fe[6], eh[4], he[4], ho[4], oh[4], pe[3], op[3], po[3], eo[2], es[2], se[2], os[2], ez[2], ze[2], oz[2],
