D33131112113313231333133313233313231333132313231323223313232323213213311221   >>    D3313111211331323133313331323331323133313231323132322331323232321321331122   <<    D33131112113313231333133313233313231333132313231323223313232323213213311223   >>      D33131112113313231333133313233313231333132313231323223313232323213213311222   >>