The letter f belongs to the group of letters that go below the line. It is easily confused with the long s but in most cases will be distinguishable by a horizontal stroke through the vertical one.

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In the middle of a word, a double f is just that and should be transcribed as ff. However, at the beginning of a word a double f is indicative of a capital f and should be transcribed as F. Some surnames still maintain the double f at the beginning of the name.

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