A border of a string is a prefix that is also a suffix of the string but not the whole string. For example, the borders of abcababcab are ab and abcab.
Your task is to find all border lengths of a given string.
The only input line has a string of length n consisting of characters a–z.
Print all border lengths of the string in increasing order.
Remember to print a ‘\n’ at the end of the output.
Do not include any spaces at the end of line.