∀ {R : Type u_1} [inst : CommRing R] {M : Type u_2} [inst_1 : AddCommGroup M] [inst_2 : Module R M]
  {Q : QuadraticForm R M} (x : CliffordAlgebra Q),
  MulOpposite.op (CliffordAlgebra.reverse x) = CliffordAlgebra.reverseOp x