Yeah I was intrested in making(trying/learning) to make formulas, but I was concerned that if I would make a new formula, would I need sacrifice one of the orginal ones?
IIRC, 11 and 13 are empty, but I may be wrong...
http://ffhacktics.com/wiki/Formulas
11, 13, 18, 19, and 46 are empty. Formula 05 is a repeat of Formula 01. And there are several other worthless formulas.
It's funny how this was dealt with so long ago in chat and now about 2 months later comes to forum...