Name: Hrayr Matevosyan Date: 02/15/06-06:32:46 PM Z

I made a typo in the previous message,

SUNSimplify[SUNT[a].SUNT[b].SUNT[c].SUNT[a].SUNT[b].SUNT[c]]=
 
(-1/2*(C_A-2*C_F))^2*C_F- 1/2*C_A*(-1/2*(C_A-2*C_F))*C_F=

=(N^2+1)*(N^2-1)/(2N)^3.

Hrayr