D112221121133131333132322112331323331311221123223313133313133221   >>    D11222112113313133313232211233132333131122112322331313331313322   <<    D112221121133131333132322112331323331311221123223313133313133223   >>      D112221121133131333132322112331323331311221123223313133313133222   >>