how do i print the second letter first and then the first word in python?

One simple approach would be the following (recursive) function:

def reverse_chunks(s, n=2):
    if not s:
        return s
    return s[:n][::-1] + reverse_chunks(s[n:])

>>> reverse_chunks("stackoverflow")
'tscaokevfrolw'

Of course, there are more performant iterative approaches.