I233231323331311331313232233132211233131323223313231322133313231323221311   >>    I23323132333131133131323223313221123313132322331323132213331323132322131   <<    I233231323331311331313232233132211233131323223313231322133313231323221313   >>      I233231323331311331313232233132211233131323223313231322133313231323221312   >>