1 You can ignore "ü" since it's never used. Even more rare is "ÿ". No words start with "Ë", "Ï", or "Ù". Even though I'm still looking for words that start with "Û", I included it anyway because it is more common.

2 Alt Code: 0192 ≠ 192

Relative Frequency: Calculated from absolute incidence rates at https://www.sttmedia.com/characterfrequency-french

Note: Diatric = Diacritic

Also useful: https://www.asciitable.com/asciifull.gif from asciitable.com.

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