opem[6], perm[6], prom[6], erom[5], orem[5], oper[5], pero[5],
mop[5], mer[4], rem[4], mor[4], per[4], rep[4], por[4], pro[4], rop[4], ero[3],
em[3], me[3], om[3], pe[3], op[3], po[3], eo[2], er[2], re[2], or[2], ro[2],
