express groebner basis polynomials as combination of input polynomials?

[Matthias Kramm]

After building a Groebner basis with

g = sympy.groebner([f1, f2, ...], ...)

is there a way to describe the elements of the basis (g.polys) as a combination of the [f1, f2, ...]? (I.e., figure out how the Groebner basis was derived?)

(Context: I'm trying to express a polynomial f as a combination of other polynomials f1, f2, ..., by converting the latter into a Groebner basis)