B3311331313231311331322331333132313132313331323223313231311123311   >>    B331133131323131133132233133313231313231333132322331323131112331   <<    B3311331313231311331322331333132313132313331323223313231311123313   >>      B3311331313231311331322331333132313132313331323223313231311123312   >>