D12121212121313232233132332313233313132313331313232113313231323221211   >>    D1212121212131323223313233231323331313231333131323211331323132322121   <<    D12121212121313232233132332313233313132313331313232113313231323221213   >>      D12121212121313232233132332313233313132313331313232113313231323221212   >>