B3311331313231311331322331333132313132313331323223312323132212331   >>    B331133131323131133132233133313231313231333132322331232313221233   <<    B3311331313231311331322331333132313132313331323223312323132212333   >>      B3311331313231311331322331333132313132313331323223312323132212332   >>