B3311331313231311331322331333131133133313232112311331333132311321   >>    B331133131323131133132233133313113313331323211231133133313231132   <<    B3311331313231311331322331333131133133313232112311331333132311323   >>      B3311331313231311331322331333131133133313232112311331333132311322   >>