Unofficial voluntary 335 tutor Jonathan Laplante's website
Problems with the hints:
instead of 1$ I put $1, when pushing the $ back in the stack. This is not the way
Dr. Shiri does it in his slides, so do it the other way, this way, for example: "a, $ -> 1$".
Also, for number 2, you don't have to put in Greibach form if you don't want
to. For number 4, I said "or" instead of "and," that's it, I hope it didn't confuse
any of you.