Matrix t*K(1) in Subspace 47 with Dimension 14

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

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