def METHOD_NAME(bb_lines):
    for num, ln in enumerate(bb_lines):
        m = _regex_incref.match(ln)
        if m is not None:
            yield num, m.group(1), None
            continue
        m = _regex_decref.match(ln)
        if m is not None:
            yield num, None, m.group(1)
            continue
        yield ln, None, None