20x^2y^5
-2a * 3a^4
-12y^6
20x^4 y
2p^3 * -2p^2
2x^3 * 10xy
-12x^3
-4p^5
-3x^2 * 4x
-4p^2 * p
-6a^5
6a^5
12y^2 * -y^4
-4p^3
2a^3 * 3a^2
5xy^3 * 4xy^2
