B3311331313231311331322331333132313232233131311331333131333132313233311321   >>    B331133131323131133132233133313231323223313131133133313133313231323331132   <<    B3311331313231311331322331333132313232233131311331333131333132313233311323   >>      B3311331313231311331322331333132313232233131311331333131333132313233311322   >>