Click the Flag, then type in Yes, Preset, or No and then your username will be generated. Warning: If you stop in the middle of your preset frequencies than your numbers will not match to the ones given and you will have issues. Please only Input Numbers (that are not 0 or negative numbers) into Frequencies, if you input anything else it may break it.
This is version V 2.0 which includes custom Frequencies Thanks to @pezao123 for the idea. This coding is all of mine and I don't think you can find any other project like this (Unless you remix it of course) Anyone can use the usernames this project generates. No need to give credit because else it would be too complicated to give credit.