B3311331313231311331322331333132313331322121133133313331333133313221323123131   >>    B331133131323131133132233133313231333132212113313331333133313331322132312313   <<    B3311331313231311331322331333132313331322121133133313331333133313221323123133   >>      B3311331313231311331322331333132313331322121133133313331333133313221323123132   >>