def sanitize(time_string):
	"""
	:param time_string: Input time string, which may have mins and seconds separated by either ':', '-' or '.'
	:return:            Uniformly formatted time string with mins and secs separated by '.'
	"""
	if "-" in time_string:
		splitter = "-"
	elif ":" in time_string:
		splitter = ":"
	else:
		return time_string
	(mins, secs) = time_string.split(splitter)
	return mins + "." + secs