-2(a-4-2a^2+2a)-3a(-a-4-a+2a^2)-6a(-a^2+a+1-2a+8+4a^2-4a-3a(-a-4-a+2a^2)-6a^3+6a^2-6-2a+8+4a^2-4a+3a^2+12a+3a^3+12a-6a^3+6a^2-6-2a+8+4a^2-4a+3a^2+12a+3a^3+12a-6a^3+6a^2-6(4a^2+3a^2)+(3a^3-6a^3)+(-2a-4a+12a+12a-6a-6a)+7a^2-3a^3+12a-20
-2(a-4-2a^2+2a)-3a(-a-4-a+2a^2)-6a(-a^2+a+1
-2a+8+4a^2-4a-3a(-a-4-a+2a^2)-6a^3+6a^2-6
-2a+8+4a^2-4a+3a^2+12a+3a^3+12a-6a^3+6a^2-6
-2a+8+4a^2-4a+3a^2+12a+3a^3+12a-6a^3+6a^2-6
(4a^2+3a^2)+(3a^3-6a^3)+(-2a-4a+12a+12a-6a-6a)+
7a^2-3a^3+12a-20