D112221121133131333132322112331323331311221123223313133313231333131333111   >>    D11222112113313133313232211233132333131122112322331313331323133313133311   <<    D112221121133131333132322112331323331311221123223313133313231333131333113   >>      D112221121133131333132322112331323331311221123223313133313231333131333112   >>