T k

T kT kT kT kT kT k
T kT kT kT kT kT k
T kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT kT k