Data:L11a379/Multivariable Alexander

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\frac{u^4 v^2-u^4 v-u^3 v^4+4 u^3 v^3-6 u^3 v^2+4 u^3 v-u^3+2 u^2 v^4-7 u^2 v^3+9 u^2 v^2-7 u^2 v+2 u^2-u v^4+4 u v^3-6 u v^2+4 u v-u-v^3+v^2}{u^2 v^2}