a = 'mensaje'
c = 'abcdefg'

i = len(c)-1
for b  in a:
    print(b*c.index(c[i]))
    i -= 1

L = [5,3,8,2,7]

A = [0]*10
indice = 3
for valor in L:
    if valor < 6:
        indice -= 1
    else:
        indice += 1
    A[indice] = valor

print(set(A))