B3311331313231311331322331333132313331322121133133313232213231311311   >>    B331133131323131133132233133313231333132212113313331323221323131131   <<    B3311331313231311331322331333132313331322121133133313232213231311313   >>      B3311331313231311331322331333132313331322121133133313232213231311312   >>