D112221121133131333132322112331323331311221123223313131323132313232213221   >>    D11222112113313133313232211233132333131122112322331313132313231323221322   <<    D112221121133131333132322112331323331311221123223313131323132313232213223   >>      D112221121133131333132322112331323331311221123223313131323132313232213222   >>