ctbl:=[ [ 1, 1, 36, 36, 40, 60, 90 ], [ 1, 1, -36, -36, 40, -60, 90 ], [ 1, 1, 0, 0, 16, 0, -18 ], [ 1, 1, -2*E(5)+2*E(5)^2+2*E(5)^3-2*E(5)^4, -2*E(5)+2*E(5)^2+2*E(5)^3-2*E(5)^4, -4, 4*E(5)-4*E(5)^2-4*E(5)^3+4*E(5)^4, 2 ], [ 1, 1, 2*E(5)-2*E(5)^2-2*E(5)^3+2*E(5)^4, 2*E(5)-2*E(5)^2-2*E(5)^3+2*E(5)^4, -4, -4*E(5)+4*E(5)^2+4*E(5)^3-4*E(5)^4, 2 ], [ 1, -1, -6, 6, 0, 0, 0 ], [ 1, -1, 6, -6, 0, 0, 0 ] ];