def get_sequencies(txt, length):
    """Given a raw text (string), this function returns all the sequencies we can find by a sliding
	window.
	@param: txt (string)
	@param: length (int)
	@return: sequencies (list)
	"""
    raw_text = txt.replace('\n', ' ')
    sequencies = []
    for i in range(length, len(raw_text)):
        seq = raw_text[i - length:i + 1]
        sequencies.append(seq)
    return sequencies
