Matrix t*K(1) in Subspace 45 with Dimension 16

(K(1) is the first-order Grosse operator)

((-I/2)*t)/Sqrt[3] (-I/12)*(-13*I + Sqrt[3])*U -(Sqrt[3/2]*t) 0 (-I/2)*t -((-9*I + Sqrt[3])*U)/(6*Sqrt[2]) ((3*I - 7*Sqrt[3])*U)/(6*Sqrt[2]) (3*t)/Sqrt[2] 0 (-I/2)*Sqrt[3]*t (1/Sqrt[2] + I/Sqrt[6])*t ((-I/3)*(-I + Sqrt[3])*U)/Sqrt[2] (((3 + I)*Sqrt[18 - 6*Sqrt[3]] - (3 - I)*Sqrt[6 - 2*Sqrt[3]])*t)/(2*Sqrt[2]*(-3 + Sqrt[3])) ((3 + I + (3 - I)*Sqrt[3])*t)/(2*Sqrt[3 + Sqrt[3]]) (I - 1/(2*Sqrt[3]))*t -((3*I + Sqrt[3])*U)/4
((13 - I*Sqrt[3])*U)/12 ((I/2)*t)/Sqrt[3] 0 (-I/2 - 2/Sqrt[3])*t 0 -((3*I + Sqrt[3])*t)/(3*Sqrt[2]) Sqrt[2/3]*t 0 (3*t)/2 0 (I/3)*Sqrt[2]*(I + Sqrt[3])*U (1/Sqrt[2] - I/Sqrt[6])*t 0 0 -((-3*I + Sqrt[3])*U)/12 (I/2 + 1/Sqrt[3])*t
Sqrt[3/2]*t 0 0 ((-I/2)*(-3*I + Sqrt[3])*U)/Sqrt[2] ((3 - I*Sqrt[3])*t)/Sqrt[2] 0 0 0 -((-3*I + Sqrt[3])*U)/(2*Sqrt[2]) 0 0 0 0 0 -(t/Sqrt[2]) 0
0 (-I/2 + 2/Sqrt[3])*t ((3 - I*Sqrt[3])*U)/(2*Sqrt[2]) (I/2)*Sqrt[3]*t (I/4)*(3*I + Sqrt[3])*U t/Sqrt[2] t/Sqrt[2] ((3*I + Sqrt[3])*U)/(2*Sqrt[2]) -(Sqrt[3]*t)/2 ((3*I + Sqrt[3])*U)/4 0 (Sqrt[2/3] - I*Sqrt[2])*t 0 0 0 (-I/2)*Sqrt[3]*t
(-I/2)*t 0 ((-3 - I*Sqrt[3])*t)/Sqrt[2] ((3 + I*Sqrt[3])*U)/4 (I/2)*Sqrt[3]*t 0 0 0 -((-3*I + Sqrt[3])*U)/4 ((-3*I)/2)*t ((I + Sqrt[3])*t)/Sqrt[2] 0 0 0 -t/2 0
((9*I + Sqrt[3])*U)/(6*Sqrt[2]) ((-I)/Sqrt[2] + 1/Sqrt[6])*t 0 -(t/Sqrt[2]) 0 0 0 0 -(Sqrt[3/2]*t) 0 (-2*U)/Sqrt[3] (I - 1/Sqrt[3])*t 0 0 ((-I/2)*(-3*I + Sqrt[3])*U)/Sqrt[2] Sqrt[2]*t
((3*I + 7*Sqrt[3])*U)/(6*Sqrt[2]) -(Sqrt[2/3]*t) 0 -(t/Sqrt[2]) 0 0 0 0 -(Sqrt[3/2]*t) 0 ((3*I + Sqrt[3])*U)/3 (2*t)/Sqrt[3] 0 0 ((I/2)*(I + Sqrt[3])*U)/Sqrt[2] (I*(I + Sqrt[3])*t)/Sqrt[2]
(-3*t)/Sqrt[2] 0 0 -((-3*I + Sqrt[3])*U)/(2*Sqrt[2]) 0 0 0 0 ((I/2)*(5*I + Sqrt[3])*U)/Sqrt[2] (I*(3*I + Sqrt[3])*t)/Sqrt[2] 0 0 0 0 Sqrt[3/2]*t 0
0 (-3*t)/2 ((3*I + Sqrt[3])*U)/(2*Sqrt[2]) (Sqrt[3]*t)/2 ((3*I + Sqrt[3])*U)/4 Sqrt[3/2]*t Sqrt[3/2]*t ((5 + I*Sqrt[3])*U)/(2*Sqrt[2]) (I/2)*Sqrt[3]*t ((-1 + (3*I)*Sqrt[3])*U)/4 0 0 0 0 0 (Sqrt[3]*t)/2
(-I/2)*Sqrt[3]*t 0 0 -((-3*I + Sqrt[3])*U)/4 ((-3*I)/2)*t 0 0 ((3 + I*Sqrt[3])*t)/Sqrt[2] (U + (3*I)*Sqrt[3]*U)/4 (-I/2)*Sqrt[3]*t ((3 + I*Sqrt[3])*t)/Sqrt[2] 0 0 0 -(Sqrt[3]*t)/2 0
(-(1/Sqrt[2]) + I/Sqrt[6])*t (Sqrt[2]*(1 + I*Sqrt[3])*U)/3 0 0 -(((-I + Sqrt[3])*t)/Sqrt[2]) (2*U)/Sqrt[3] -((-3*I + Sqrt[3])*U)/3 0 0 (I*(3*I + Sqrt[3])*t)/Sqrt[2] ((-I)*t)/Sqrt[3] (-I/6)*(-7*I + Sqrt[3])*U (I*Sqrt[6]*(-5 + 3*Sqrt[3])*t)/(3 - Sqrt[3])^(3/2) (-I)*(2 + Sqrt[3])*Sqrt[2/(3 + Sqrt[3])]*t (I/Sqrt[2] + 1/Sqrt[6])*t 0
(Sqrt[2]*U - I*Sqrt[6]*U)/6 (-(1/Sqrt[2]) - I/Sqrt[6])*t 0 -(Sqrt[2]*(3*I + Sqrt[3])*t)/3 0 (I + 1/Sqrt[3])*t (-2*t)/Sqrt[3] 0 0 0 ((7 - I*Sqrt[3])*U)/6 (I*t)/Sqrt[3] 0 0 -((-3*I + Sqrt[3])*U)/(3*Sqrt[2]) ((-I)/Sqrt[2] + 1/Sqrt[6])*t
(((-3 + I)*Sqrt[18 - 6*Sqrt[3]] + (3 + I)*Sqrt[6 - 2*Sqrt[3]])*t)/(2*Sqrt[2]*(-3 + Sqrt[3])) 0 0 0 0 0 0 0 0 0 (I*Sqrt[6]*(-5 + 3*Sqrt[3])*t)/(3 - Sqrt[3])^(3/2) 0 0 0 ((-1/2 + I/2)*Sqrt[3]*(-3 + Sqrt[3] + (3*I)*Sqrt[4 - 2*Sqrt[3]])*t)/(3 - Sqrt[3])^(3/2) 0
((-3 + I - (3 + I)*Sqrt[3])*t)/(2*Sqrt[3 + Sqrt[3]]) 0 0 0 0 0 0 0 0 0 (-I)*(2 + Sqrt[3])*Sqrt[2/(3 + Sqrt[3])]*t 0 0 0 ((1/2 + I/2)*(-3*I + Sqrt[3])*t)/Sqrt[3 + Sqrt[3]] 0
((6*I + Sqrt[3])*t)/6 ((3*I + Sqrt[3])*U)/12 t/Sqrt[2] 0 t/2 ((3 - I*Sqrt[3])*U)/(2*Sqrt[2]) (Sqrt[2]*U + I*Sqrt[6]*U)/4 -(Sqrt[3/2]*t) 0 (Sqrt[3]*t)/2 (I/Sqrt[2] - 1/Sqrt[6])*t ((3*I + Sqrt[3])*U)/(3*Sqrt[2]) ((1/2 + I/2)*Sqrt[3]*(-3 + Sqrt[3] - (3*I)*Sqrt[4 - 2*Sqrt[3]])*t)/(3 - Sqrt[3])^(3/2) ((-1/2 + I/2)*(3*I + Sqrt[3])*t)/Sqrt[3 + Sqrt[3]] (I/2)*Sqrt[3]*t (-I/4)*(-5*I + Sqrt[3])*U
((-3*I + Sqrt[3])*U)/4 (I/2 - 1/Sqrt[3])*t 0 (-I/2)*Sqrt[3]*t 0 -(Sqrt[2]*t) ((1 + I*Sqrt[3])*t)/Sqrt[2] 0 -(Sqrt[3]*t)/2 0 0 -((3*I + Sqrt[3])*t)/(3*Sqrt[2]) 0 0 ((5 - I*Sqrt[3])*U)/4 (I/2)*Sqrt[3]*t