The research has not yet been confirmed. The claim has not been independently confirmed. However, this has never been confirmed. This has never been confirmed, but is one possibility. Beriev, however has not confirmed these reports. Again, this has never been confirmed. This, however, has not been confirmed. This title was eventually confirmed as official. Still, nothing official has confirmed this yet. However, this has not been confirmed by independent sources. This assumption however could not be confirmed. It was later confirmed for release worldwide. Namikawa later confirmed the report and apologized. The speed was not officially confirmed or independently verified. This prediction was later confirmed by experiment.