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Rotate / Flip a Unicode Box Drawing
Given a Unicode box drawing, followed by a series of rotate and/or flip commands, output the result of those operations on the drawing. For clarification, a box drawing can be made from the following characters:
─ │ ┌ ┐ └ ┘ ├ ┤ ┬ ┴ ┼
═ ║ ╔ ╗ ╚ ╝ ╠ ╣ ╦ ╩ ╬
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