Matrix t2*K(2) in Subspace 152 with Dimension 16

(K(2) is the second-order Grosse operator)

(-59*t*U)/12 (16*(1 + I*Sqrt[3])*t^2 + I*(13*I + Sqrt[3])*U^2)/24 (Sqrt[2/3] - I*Sqrt[2])*t^2 -((3*I + 2*Sqrt[3])*t*U)/(6*Sqrt[2]) 0 -((3*I + Sqrt[3])*t*U)/(12*Sqrt[2]) 0 ((3*I + Sqrt[3])*t*U)/(4*Sqrt[2]) -(Sqrt[2]*(-3*I + Sqrt[3])*t^2)/3 0 -((t*U)/Sqrt[6]) ((9*I + 11*Sqrt[3])*t*U)/(6*Sqrt[2]) ((-1 - (9*I)*Sqrt[3])*t*U)/(6*Sqrt[2]) -(8*t^2 + (1 + I*Sqrt[3])*U^2)/(3*Sqrt[2]) -((18*I + 7*Sqrt[3])*t*U)/12 (16*(3*I + Sqrt[3])*t^2 + (-3*I + Sqrt[3])*U^2)/24
(16*(1 - I*Sqrt[3])*t^2 + (-13 - I*Sqrt[3])*U^2)/24 (-19*t*U)/4 ((-I)*t*U)/Sqrt[2] 0 ((3*I - 2*Sqrt[3])*t*U)/(6*Sqrt[2]) (I/Sqrt[2] + 1/Sqrt[6])*t^2 0 (I/Sqrt[2] - 1/Sqrt[6])*t^2 ((-I/2)*t*U)/Sqrt[2] ((-3*I + Sqrt[3])*t*U)/4 -((-9*I + Sqrt[3])*U^2)/(12*Sqrt[2]) ((3*I - 7*Sqrt[3])*U^2)/(12*Sqrt[2]) ((4 - (4*I)*Sqrt[3])*t^2 + (-1 - I*Sqrt[3])*U^2)/(6*Sqrt[2]) ((5 + I*Sqrt[3])*t*U)/(2*Sqrt[2]) (-8*(-3*I + Sqrt[3])*t^2 - (3*I + Sqrt[3])*U^2)/8 ((3*I - 2*Sqrt[3])*t*U)/4
(Sqrt[2/3] + I*Sqrt[2])*t^2 (I*t*U)/Sqrt[2] (-3*t*U)/2 ((3 - I*Sqrt[3])*U^2)/4 0 -2*t^2 (t*(Sqrt[2]*U - I*Sqrt[6]*U))/4 (1 + I*Sqrt[3])*t^2 t*U 0 0 0 (-2*(3*I + Sqrt[3])*t^2)/3 -((-I + Sqrt[3])*t*U) 0 (t*U)/Sqrt[2]
((3*I - 2*Sqrt[3])*t*U)/(6*Sqrt[2]) 0 ((3 + I*Sqrt[3])*U^2)/4 -3*t*U (-2 + (2*I)*Sqrt[3])*t^2 ((3 - I*Sqrt[3])*t*U)/4 0 ((3 - I*Sqrt[3])*t*U)/4 0 0 (t*(U - I*Sqrt[3]*U))/2 (t*(U - I*Sqrt[3]*U))/2 -((3*I + Sqrt[3])*t*U)/6 0 ((3*I)/2)*Sqrt[3/2]*t*U 0
0 -((3*I + 2*Sqrt[3])*t*U)/(6*Sqrt[2]) 0 (-2 - (2*I)*Sqrt[3])*t^2 -4*t*U ((1 + I*Sqrt[3])*U^2)/4 ((3 + I*Sqrt[3])*t*U)/Sqrt[2] U^2/2 ((3*I)/2)*Sqrt[3]*t*U 0 0 0 0 ((3*I + Sqrt[3])*t*U)/6 0 (t*U)/(2*Sqrt[2])
-((-3*I + Sqrt[3])*t*U)/(12*Sqrt[2]) ((-I)/Sqrt[2] + 1/Sqrt[6])*t^2 -2*t^2 ((3 + I*Sqrt[3])*t*U)/4 ((1 - I*Sqrt[3])*U^2)/4 -5*t*U -(U^2/Sqrt[2]) (I/2)*(4*I + Sqrt[3])*t*U (-8*t^2 + (1 + I*Sqrt[3])*U^2)/4 U^2/Sqrt[2] (t*U)/2 (t*U)/2 -((-3*I + Sqrt[3])*t*U)/6 (-2*(3*I + Sqrt[3])*t^2)/3 (3*(1 - I*Sqrt[3])*t*U)/(4*Sqrt[2]) ((1 - I*Sqrt[3])*t^2)/Sqrt[2]
0 0 (t*(Sqrt[2]*U + I*Sqrt[6]*U))/4 0 ((3 - I*Sqrt[3])*t*U)/Sqrt[2] -(U^2/Sqrt[2]) -4*t*U -(U^2/Sqrt[2]) 0 0 I*Sqrt[2]*(I + Sqrt[3])*t^2 -2*Sqrt[2]*t^2 0 0 0 0
((-3*I + Sqrt[3])*t*U)/(4*Sqrt[2]) -((3*I + Sqrt[3])*t^2)/(3*Sqrt[2]) (1 - I*Sqrt[3])*t^2 ((3 + I*Sqrt[3])*t*U)/4 U^2/2 (-I/2)*(-4*I + Sqrt[3])*t*U -(U^2/Sqrt[2]) -5*t*U ((4 - (4*I)*Sqrt[3])*t^2 + (1 + I*Sqrt[3])*U^2)/4 ((1 + I*Sqrt[3])*U^2)/(2*Sqrt[2]) (t*(U - I*Sqrt[3]*U))/4 (t*(U - I*Sqrt[3]*U))/4 0 (-4*t^2)/Sqrt[3] (3*(1 - I*Sqrt[3])*t*U)/(4*Sqrt[2]) ((-1 - I*Sqrt[3])*t^2)/Sqrt[2]
-(Sqrt[2]*(3*I + Sqrt[3])*t^2)/3 ((I/2)*t*U)/Sqrt[2] t*U 0 ((-3*I)/2)*Sqrt[3]*t*U (-8*t^2 + (1 - I*Sqrt[3])*U^2)/4 0 ((4 + (4*I)*Sqrt[3])*t^2 + (1 - I*Sqrt[3])*U^2)/4 -5*t*U (((3*I)/2)*(3*I + Sqrt[3])*t*U)/Sqrt[2] 0 0 (2*I + 2/Sqrt[3])*t^2 -((-I + Sqrt[3])*t*U)/2 0 (t*U)/(2*Sqrt[2])
0 ((3*I + Sqrt[3])*t*U)/4 0 0 0 U^2/Sqrt[2] 0 ((1 - I*Sqrt[3])*U^2)/(2*Sqrt[2]) (((-3*I)/2)*(-3*I + Sqrt[3])*t*U)/Sqrt[2] -6*t*U -2*Sqrt[2]*t^2 (Sqrt[2] + I*Sqrt[6])*t^2 0 0 0 (3*t*(U + I*Sqrt[3]*U))/4
-((t*U)/Sqrt[6]) -((9*I + Sqrt[3])*U^2)/(12*Sqrt[2]) 0 (t*(U + I*Sqrt[3]*U))/2 0 (t*U)/2 (-Sqrt[2] - I*Sqrt[6])*t^2 (t*(U + I*Sqrt[3]*U))/4 0 -2*Sqrt[2]*t^2 -4*t*U t*U ((9*I - 7*Sqrt[3])*t*U)/6 ((-3*I + Sqrt[3])*U^2)/6 ((I/2)*(5*I + Sqrt[3])*t*U)/Sqrt[2] ((3 + I*Sqrt[3])*U^2)/(4*Sqrt[2])
((-9*I + 11*Sqrt[3])*t*U)/(6*Sqrt[2]) -((3*I + 7*Sqrt[3])*U^2)/(12*Sqrt[2]) 0 (t*(U + I*Sqrt[3]*U))/2 0 (t*U)/2 -2*Sqrt[2]*t^2 (t*(U + I*Sqrt[3]*U))/4 0 (Sqrt[2] - I*Sqrt[6])*t^2 t*U -4*t*U -((t*U)/Sqrt[3]) -(U^2/Sqrt[3]) (I*(2*I + Sqrt[3])*t*U)/Sqrt[2] ((1 - I*Sqrt[3])*U^2)/(4*Sqrt[2])
((-1 + (9*I)*Sqrt[3])*t*U)/(6*Sqrt[2]) ((4 + (4*I)*Sqrt[3])*t^2 + I*(I + Sqrt[3])*U^2)/(6*Sqrt[2]) (2*I - 2/Sqrt[3])*t^2 -((-3*I + Sqrt[3])*t*U)/6 0 -((3*I + Sqrt[3])*t*U)/6 0 0 (-2*I + 2/Sqrt[3])*t^2 0 -((9*I + 7*Sqrt[3])*t*U)/6 -((t*U)/Sqrt[3]) (-29*t*U)/6 (-8*t^2 - U^2 + (2*I)*Sqrt[3]*U^2)/6 ((-9*I + 7*Sqrt[3])*t*U)/(6*Sqrt[2]) (4*(3*I + Sqrt[3])*t^2 + (-3*I + Sqrt[3])*U^2)/(6*Sqrt[2])
-(8*t^2 + (1 - I*Sqrt[3])*U^2)/(3*Sqrt[2]) ((5 - I*Sqrt[3])*t*U)/(2*Sqrt[2]) -((I + Sqrt[3])*t*U) 0 ((-3*I + Sqrt[3])*t*U)/6 (2*I - 2/Sqrt[3])*t^2 0 (-4*t^2)/Sqrt[3] -((I + Sqrt[3])*t*U)/2 0 ((3*I + Sqrt[3])*U^2)/6 -(U^2/Sqrt[3]) (-8*t^2 - U^2 - (2*I)*Sqrt[3]*U^2)/6 (-7*t*U)/2 0 -((-3*I + Sqrt[3])*t*U)/(2*Sqrt[2])
((18*I - 7*Sqrt[3])*t*U)/12 (-8*(3*I + Sqrt[3])*t^2 - (-3*I + Sqrt[3])*U^2)/8 0 ((-3*I)/2)*Sqrt[3/2]*t*U 0 (3*(1 + I*Sqrt[3])*t*U)/(4*Sqrt[2]) 0 (3*(1 + I*Sqrt[3])*t*U)/(4*Sqrt[2]) 0 0 ((-I/2)*(-5*I + Sqrt[3])*t*U)/Sqrt[2] ((-2 - I*Sqrt[3])*t*U)/Sqrt[2] ((9*I + 7*Sqrt[3])*t*U)/(6*Sqrt[2]) 0 (-27*t*U)/4 ((8 + (8*I)*Sqrt[3])*t^2 + I*(5*I + Sqrt[3])*U^2)/8
(16*(-3*I + Sqrt[3])*t^2 + (3*I + Sqrt[3])*U^2)/24 -((3*I + 2*Sqrt[3])*t*U)/4 (t*U)/Sqrt[2] 0 (t*U)/(2*Sqrt[2]) ((1 + I*Sqrt[3])*t^2)/Sqrt[2] 0 (I*(I + Sqrt[3])*t^2)/Sqrt[2] (t*U)/(2*Sqrt[2]) (3*t*(U - I*Sqrt[3]*U))/4 ((3 - I*Sqrt[3])*U^2)/(4*Sqrt[2]) ((1 + I*Sqrt[3])*U^2)/(4*Sqrt[2]) (4*(-3*I + Sqrt[3])*t^2 + (3*I + Sqrt[3])*U^2)/(6*Sqrt[2]) -((3*I + Sqrt[3])*t*U)/(2*Sqrt[2]) ((8 - (8*I)*Sqrt[3])*t^2 + (-5 - I*Sqrt[3])*U^2)/8 (-23*t*U)/4