print((chr(ord(eval(input()))+1)))

a = chr(ord(eval(input()))+1)

print(a)

print((chr(ord(eval(input())) + 1)))

a = chr(ord(eval(input())) + 1)
print(a)

-print((chr(ord(eval(input())) + 1))) +a = chr(ord(eval(input())) + 1) +print(a)