Matrix t*K(1) in Subspace 98 with Dimension 3

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

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