a = "Hello Python World"
b = ""
c = ""
n = ""
g = 0
j = 0
for i in range(0,3):
    while a[j] != ' ':
        if g == 0:
            b += a[j]
        elif g == 1:
            c += a[j]
        elif n == 1:
            n += a[j]
        j += 1
    g += 1
for i in b:
    if ord(i) >= 65 and ord(i) <= 90:
        i += 32
    else:
        i -= 32
for i in c:
    if ord(i) >= 65 and ord(i) <= 90:
        i += 32
    else:
        i -= 32
for i in n:
    if ord(i) >= 65 and ord(i) <= 90:
        i += 32
    else:
        i -= 32
print(b[::-1])
print(c[::-1])
print(n[::-1])