[amitport]

You mean צ / ץ פ / ף כ / ך

And it does seem to treat them like totally different letters. They are the same though I'm not sure what will be more fun to play. Note that Hebrew has fewer letters to begin with (22 not counting those).

[puttycat]

OP here. We actually count them as the same letter for “yellow” boxes, only the keyboard separates them into different keys (this is explained in the help screen).

[amitport]

Oh sorry, I thought it didn't get selected...