If the correct spelling according to the German language uses the "Veit", which later was changed to "F" when trying his father moved to the United States to live in accordance with spelling and pronunciation.
If the German spelling is correct to use "Veit", which was later switched to the characters between "F" when his father moved to the United States. To comply with the spelling and pronunciation of the American model.
If the spell by the German right to use "Veit" which later changed the letters. "F." when Bi Da moved to live in the United States. In order to comply with the spelling and pronunciation American style.