# Tensor commutation

## Homework Statement

How would you show that

$T^{abc}S_{b} = S_{b}T^{abc}$

but

$T^{abc} S_{bd} \neq S_{bd} T^{abc}$

in general?

## The Attempt at a Solution

If I write out the sums explicitly, they appear totally the same to me. Any hints or ideas please?