D112221121133131333132322112331323331311221123223313133313231323133313233232221   >>    D11222112113313133313232211233132333131122112322331313331323132313331323323222   <<    D112221121133131333132322112331323331311221123223313133313231323133313233232223   >>      D112221121133131333132322112331323331311221123223313133313231323133313233232222   >>