D121212121213132313113313231123313231323132322133313231323223313231111   >>    D12121212121313231311331323112331323132313232213331323132322331323111   <<    D121212121213132313113313231123313231323132322133313231323223313231113   >>      D121212121213132313113313231123313231323132322133313231323223313231112   >>