That's definitely unexpected. The only case I would expect is "yy" since 'y' is an option under both consonants and vowels.
I'll investigate. Thanks for pointing it out!
Could you enhance the character slider to allow a user specified "recipe"? Like a setting for the ratio of of vowels to consonants?
That might reduce the occurance of 'yy' like results.
Pretty cool project - thanks for posting!
I certainly could. I'll add it to my backlog. Thanks for your feedback.