B3311331313231311331322331333132313133313113313232213231333132322331123331   >>    B331133131323131133132233133313231313331311331323221323133313232233112333   <<    B3311331313231311331322331333132313133313113313232213231333132322331123333   >>      B3311331313231311331322331333132313133313113313232213231333132322331123332   >>