After the first two bridges the game doesn't give you any free tiles to go off of so I'm guessing based on the first two bridges you memorized the tiles for the last three. Can you upload some pics for where the tiles will be in the bridge based off of the first two?
There are cases in the PDF linked in the guide, named according to the first (purple) clue. The stages of Rings + Bottomless Pits aren't mixed and matched randomly; the same green/red/blue/yellow solutions will always go with the same purple solution. Once you've identified the case with the several letters given on the purple stage, the other images on that page should give you the correct answers all the way through. If they don't, it's because I made a mistake in the PDF, so please let me know. Let me know if that helps :)
oh lol i somehow missed the pdf. Thanks for making that! :) However you did miss the blue levels for the snagnets pit