I need to make some computations in low degree in the Tensor algebra T(V) of a rational vector space V, but i cannot find a good way of doing this. I could use FreeAlgebras, but then i cannot get access to the summands in my element : for example i want to be able to retrieve a b and c from the element $abc(whenevertheelementishomogeneous).ThereasonforthisisIneedtodefinea′cycle′functionthatassociatesWatoatensoraWwhenWisatensoranda \in V$.