B3311331313231311331322331333132333133313132233133313232233132313113313131   >>    B331133131323131133132233133313233313331313223313331323223313231311331313   <<    B3311331313231311331322331333132333133313132233133313232233132313113313133   >>      B3311331313231311331322331333132333133313132233133313232233132313113313132   >>