A triangle has side lengths of left bracket, 4, m, plus, 3, n, right bracket(4m+3n) centimeters, left bracket, 8, m, plus, 10, p, right bracket(8m+10p) centimeters, and left bracket, 2, p, plus, 2, n, right bracket(2p+2n) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?
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