D121212121213132313113313231123313231323132322133313232233132312311   >>    D12121212121313231311331323112331323132313232213331323223313231231   <<    D121212121213132313113313231123313231323132322133313232233132312313   >>      D121212121213132313113313231123313231323132322133313232233132312312   >>