B331133131323131133132233133313231313231333132322331321123113121   >>    B33113313132313113313223313331323131323133313232233132112311312   <<    B331133131323131133132233133313231313231333132322331321123113123   >>      B331133131323131133132233133313231313231333132322331321123113122   >>