demem[8], merem[7], remem[7], repem[7],
peem[6], derm[6], perm[6], erem[5],
dem[5], mem[5], mee[4], der[4], red[4], mer[4], rem[4], per[4], rep[4],
de[3], em[3], me[3], pe[3], ee[2], er[2], re[2],
