def METHOD_NAME(cardinal):
    """
    any alphanumerical character sequence with at least one number with length greater equal to 3
    """
    digit = pynini.compose(cardinal.graph_no_exception, DAMO_DIGIT)
    character = digit | DAMO_ALPHA
    sequence = character + pynini.closure(pynutil.delete(" ") + character, 2)
    sequence = sequence @ (pynini.closure(DAMO_ALNUM) + DAMO_DIGIT + pynini.closure(DAMO_ALNUM))
    return sequence.optimize()