D13133313221323331323331313113313233313231322331313231323223111   >>    D1313331322132333132333131311331323331323132233131323132322311   <<    D13133313221323331323331313113313233313231322331313231323223113   >>      D13133313221323331323331313113313233313231322331313231323223112   >>