letters = "abcdefghijklmnopqrstuvwxyz"

backwards = letters[25::-1]
print(backwards)
a = letters[16:13:-1]
print(a)
b = letters[4::-1]
print(b)
c = letters[:17:-1]
print(c)

"""naam = input("Wat is je naam ? : ")
print("Hey " + naam + ", nu geef ik hem omgekeerd terug!:)")
backW = naam[::-1]
print(backW)"""
