B3311331313231311331322331333132313132313331323223313231232312311   >>    B331133131323131133132233133313231313231333132322331323123231231   <<    B3311331313231311331322331333132313132313331323223313231232312313   >>      B3311331313231311331322331333132313132313331323223313231232312312   >>