B3311331313231311331322331333132313233313232233133313331322123321   >>    B331133131323131133132233133313231323331323223313331333132212332   <<    B3311331313231311331322331333132313233313232233133313331322123323   >>      B3311331313231311331322331333132313233313232233133313331322123322   >>