puzzle 85: "so it goes (freestyle 93)"

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as noted on twitter, this puzzle was delayed by the end of the semester, traveling home, and by the fact that this puzzle just would not cooperate. i'm still not completely satisfied with this, and apologize in advance if you consider anything here to be a natick.

however: as penance to make up for this, there will be two puzzles next week. one of them will be a quasi-themed freestyle; the other a variety puzzle (of which i'm looking forward to making more in the next future). there might also be more puzzles and/or surprises and/or presents under the tree as well.