repem[7], sepem[7], sperm[7], serem[6],
peem[6], perm[6], psem[6], spem[6], erem[5], esem[5], pers[5], eser[4],
mee[4], mer[4], rem[4], per[4], rep[4], mes[4], sem[4], sep[4], ser[3],
em[3], me[3], pe[3], ee[2], er[2], re[2], es[2], se[2],
