B3311331313231311331322331333132333131111331323133313232233132313221211   >>    B331133131323131133132233133313233313111133132313331323223313231322121   <<    B3311331313231311331322331333132333131111331323133313232233132313221213   >>      B3311331313231311331322331333132333131111331323133313232233132313221212   >>