s = "001100"
for x in s[len(s)-1::-1]:
print(x)
string = "trick or treat"
for i in range(len(string)-1, 0-1, -1):
print string[i]
string = "trick or treat"
for c in string[::-1]:
print c
encrypted_message = "!XgXnXiXcXiXlXsX XnXoXhXtXyXpX XgXnXiXnXrXaXeXlX XmXaX XI"
encrypted_message[-1:0:-2]