It's interesting how the alphabet is so different for your sign language than our sign language (I do know some American Sign Language). I've always kind of wondered why there isn't a universal sign language and then everyone can learn it in school and not only speak with deaf, mute, nonverbal autistic, and other people who need it but also it could be a universal language so even if our audible languages are different we could still communicate. I mean obviously if you were spelling words out you'd run into the same problem, but the not-spelled-out words could be universal? Just a thing I've always wondered.
The sign language I learned, I learned from a coworker! :)