#!/a/a/a a0N
"""Aa a A a a"""N
N
N
a a.a a AN
N
N
a a_a(A, a_a, a):N
    """Aa a A a a"""N
    a = A.a.AaAa()(A)N
    a = A.a.Aa('a')(a)N
    a = A.a.Aa0A(a(a_a * a), 0,N
                          a_a='a_a')(a)N
    a A.a.AaAa0A(0)(a), a(a_a * a)N
