prop_logic_puzzle / example_num_vars5_depth7 /puzzle_6fb6185aa47d0813.txt
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new ((D β†’ E) β†’ C) β†’ (A β†’ (C β†’ ((B ∨ (C ∨ D) β†’ B) β†’ (A β†’ ((D β†’ D) β†’ A)))))
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exact 1