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Construct natural deduction proofs for each of the following.
118.2 p&(q&r).'. q
118.4 .'. ¬(p&(q&¬p))
118.10 q .'. ¬(¬p&¬q)
122.3* p " q, ¬p " r .'.¬q " r
122.7* p " q, ¬(p " r) .'. ¬(q " r)
122.10 p " q, ¬q .'. ¬p

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