D21221323131123313112211231333132333132333132313231323223322331   >>    D2122132313112331311221123133313233313233313231323132322332233   <<    D21221323131123313112211231333132333132333132313231323223322333   >>      D21221323131123313112211231333132333132333132313231323223322332   >>