age = 33
if age < 2:
    print("You are a baby.")
elif age < 4 and age >=2:
    print("You are learning walking.")
elif age < 13 and age >=4:
    print("You are a child.")
elif age <20 and age >= 13:
    print("You are a teenager.")
elif age <65 and age >= 20:
    print("You are an adult.")
else:
    print("You are an old.")