def refl_brkseqs(refl):
    """
        >>> refl_brkseqs([0, 0, 0, 1, 2, 2, 2])
        [3, 4]
    """
    brks = []
    prev_value = refl[0]
    for i in range(1, len(refl)):
        curr_value = refl[i]
        if curr_value == prev_value:
            pass
        else:
            brks.append(i)
            prev_value = curr_value
    return brks
