Been of work all weekend, and glad to see that we have a few more people interested in the puzzle, but please people dont give away the answers on the forum TIPS ONLY as there are other people joining in at the first level seeing the answer to the sixth, seventh and so on. The reason i'm saying this is that the further you get into the puzzle you will need to refer to some of the early levels for the answer. If your really stumped send answers in PM's. Sorry for busting balls but frustration 3 has just been scraped due to people just googling the answers.
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