A={-9,-3,-1,1,3,9}
B={-24,-12,-8,-6,-4,-3,-2,-1,1,2,3,4,6,8,12,24}
C={-12,-6,-4,-3,-2,-1,1,2,3,4,6,12}
D={-18,-9,-6,-3,-2,-1,1,2,3,6,9,18}
E={-42,-39, -36,-33, -30, -27, -24, -21, -18, -15, -12, -9, -6, -3, 0, 3, 6}
F={-35, -30, -25, -20, -15, -10, -5, 0, 5, 10}
G={-56, -48, -40, -32, -24, -16, -8, 0, 8, 16}