девятая

a = ["A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"]
proverka = 0
fg = 0
def jopa(m , b):
    global proverka
    global fg
    for i in range(m):
        print (b, end = " ")
    print()
    if b== "Z":
        proverka +=1
    if proverka > 0 and b =="A":
        return "фсё"
    if proverka > 0:
        m += 2
        fg-=1
        b = a[fg]
        return jopa(m,b)
    else:
        m-=2
        fg+=1
        b = a[fg]
        return jopa(m, b)
jopa(52,"A")