def read_enforced_pairs(path):
    """ Reads a file containing kissing loop pairs into an array.

    Args:
        path -- str
    Returns:
        list<i, j>
    """
    pairs = []
    if path != None:
        with open(path) as f:
            for line in f:
                t = line.split(" ")
                pairs.append(([t[0], t[1]]))
    return pairs