> But it did not mention the most similar-sounding pair "F" (Foxtrot) and "S" (Sierra), which are nearly indistinguishable. My family name begins with a 'F' an

> But it did not mention the most similar-sounding pair "F" (Foxtrot) and "S" (Sierra), which are nearly indistinguishable. My family name begins with a 'F' and, indeed, I can't count the number of times where people write a 'S' instead. I've got invoices with a 'S' instead of a 'F'!