a a
N
a a
N

N
a_a=[]
N
a a a a.a:
N
    a_a.a(a)
N
   
N
a_a="/a/a.a.a"
N
a a_a[0] == "-a":
N
    a_a = a_a[0]
N

N
a=a.a()
N
A =a.a(a)   # Aa a'a a a A a
N
A = 0      # Aa a a a a a
N

N
# Aa a A/A a
N
a = a.a(a.A_A, a.A_A)
N

N
a=Aa
N
a=""
N
a a!= "a":
N
    a=a()
N
    
N
    a(a == "a"):
N
			#Aa a a a
N
        a_a = (A, A)
N
        a ('Aa a {} a {}'.a(A,A))
N
        a.a(a_a)
N
        a = Aa;
N
        a("Aa a a a a")
N
    
N
    a(a == "a"):
N
        a.a()