Matrix t*K(1) in Subspace 89 with Dimension 16

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

0 U 0 -t 0 0 (-I/2)*(-I + Sqrt[3])*t 0 0 0 (-I/2)*(-I + Sqrt[3])*t 0 0 0 0 (I/2)*(3*I + Sqrt[3])*t
-U (-I)*Sqrt[3]*t (I*(3*I + Sqrt[3])*t)/Sqrt[2] 0 0 0 0 0 0 0 0 0 0 0 0 0
0 ((3 + I*Sqrt[3])*t)/Sqrt[2] 0 (I*(I + Sqrt[3])*U)/Sqrt[2] 0 0 Sqrt[2]*U 0 0 0 0 0 0 0 0 0
t 0 ((1 + I*Sqrt[3])*U)/Sqrt[2] 0 U Sqrt[2]*U (-I/2)*(-I + Sqrt[3])*t (-U - I*Sqrt[3]*U)/2 (I*(I + Sqrt[3])*t)/Sqrt[2] 0 ((1 + I*Sqrt[3])*t)/2 0 0 0 0 (-I/2)*(-I + Sqrt[3])*t
0 0 0 -U 0 0 U (I/2)*(I + Sqrt[3])*t 0 (I/2)*(I + Sqrt[3])*t 0 0 I*Sqrt[3]*t 0 (-I/2)*(-I + Sqrt[3])*t 0
0 0 0 -(Sqrt[2]*U) 0 0 Sqrt[2]*U ((1 - I*Sqrt[3])*t)/Sqrt[2] 0 -(Sqrt[2]*t) 0 0 0 0 -(Sqrt[2]*t) 0
((1 - I*Sqrt[3])*t)/2 0 -(Sqrt[2]*U) ((1 - I*Sqrt[3])*t)/2 -U -(Sqrt[2]*U) 0 U -(Sqrt[2]*t) 0 -t 0 0 0 0 -t
0 0 0 (U - I*Sqrt[3]*U)/2 ((1 + I*Sqrt[3])*t)/2 ((-1 - I*Sqrt[3])*t)/Sqrt[2] -U 0 0 -t 0 0 (-I/2)*(-I + Sqrt[3])*t 0 (I/2)*(I + Sqrt[3])*t 0
0 0 0 ((1 + I*Sqrt[3])*t)/Sqrt[2] 0 0 Sqrt[2]*t 0 0 Sqrt[2]*U ((-1 - I*Sqrt[3])*t)/Sqrt[2] 0 0 0 ((-1 - I*Sqrt[3])*U)/Sqrt[2] 0
0 0 0 0 ((1 + I*Sqrt[3])*t)/2 Sqrt[2]*t 0 t -(Sqrt[2]*U) 0 U (I*(I + Sqrt[3])*U)/Sqrt[2] (-I/2)*(-I + Sqrt[3])*t 0 ((1 - I*Sqrt[3])*t)/2 (-U - I*Sqrt[3]*U)/2
((1 - I*Sqrt[3])*t)/2 0 0 (I/2)*(I + Sqrt[3])*t 0 0 t 0 ((1 - I*Sqrt[3])*t)/Sqrt[2] -U 0 0 0 0 (I/2)*(I + Sqrt[3])*U -t
0 0 0 0 0 0 0 0 0 ((1 + I*Sqrt[3])*U)/Sqrt[2] 0 0 0 (I*(3*I + Sqrt[3])*t)/Sqrt[2] Sqrt[2]*U 0
0 0 0 0 I*Sqrt[3]*t 0 0 ((1 - I*Sqrt[3])*t)/2 0 ((1 - I*Sqrt[3])*t)/2 0 0 0 (U - I*Sqrt[3]*U)/2 ((1 + I*Sqrt[3])*t)/2 0
0 0 0 0 0 0 0 0 0 0 0 ((3 + I*Sqrt[3])*t)/Sqrt[2] (-U - I*Sqrt[3]*U)/2 (-I)*Sqrt[3]*t 0 0
0 0 0 0 ((1 - I*Sqrt[3])*t)/2 Sqrt[2]*t 0 ((1 + I*Sqrt[3])*t)/2 ((1 - I*Sqrt[3])*U)/Sqrt[2] (-I/2)*(-I + Sqrt[3])*t (U + I*Sqrt[3]*U)/2 -(Sqrt[2]*U) (I/2)*(I + Sqrt[3])*t 0 0 U
((3 + I*Sqrt[3])*t)/2 0 0 ((1 - I*Sqrt[3])*t)/2 0 0 t 0 0 (U - I*Sqrt[3]*U)/2 t 0 0 0 -U 0