D33131112113313231333133313233313231333132313231323223313232323213211231111   >>    D3313111211331323133313331323331323133313231323132322331323232321321123111   <<    D33131112113313231333133313233313231333132313231323223313232323213211231113   >>      D33131112113313231333133313233313231333132313231323223313232323213211231112   >>