If you're stuck on number/page 16, my first recommendation is to think back to number 7. For those stuck on 7, remember: different language. Ok, so if that isn't enough for getting past 16, then use google and do some looking.
If you're still stuck on 16 (it can be hard to find), try this page. That's about all I can help you with. :)
Oh, if you're stuck on another number, put it in the comments. I'm not finished yet, but I'll help where I can.