B3311331313231311331322331333132313132313331323223313223313123121   >>    B331133131323131133132233133313231313231333132322331322331312312   <<    B3311331313231311331322331333132313132313331323223313223313123123   >>      B3311331313231311331322331333132313132313331323223313223313123122   >>