B3311331313231311331322331333132313113313131133133313232233132311211   >>    B331133131323131133132233133313231311331313113313331323223313231121   <<    B3311331313231311331322331333132313113313131133133313232233132311213   >>      B3311331313231311331322331333132313113313131133133313232233132311212   >>