  The Deodhar decomposition of the Grassmannian is a refinement of the
Schubert, Richardson, and positroid stratifications of the Grassmannian.
Go-diagrams are certain fillings of Ferrers diagrams with black stones, white
stones, and pluses which index Deodhar components in the Grassmannian. We
provide a series of corrective flips on diagrams which may be used to transform
arbitrary fillings of Ferrers shapes with black stones, white stones, and
pluses into a Go-diagram. This provides an extension of Lam and Williams'
Le-moves for transforming reduced diagrams into Le-diagrams to the context of
non-reduced diagrams. Next, we address the question of describing when the
closure of one Deodhar component is contained in the closure of another. We
show that if one Go-diagram $D$ is obtained from another $D'$ by replacing
certain stones with pluses, then applying corrective flips, that there is a
containment of closures of the associated Deodhar components,
$\overline{\mathcal{D}'} \subset \overline{\mathcal{D}}$. Finally, we address
the question of verifying whether an arbitrary filling of a Ferrers shape with
black stones, white stones, and pluses is a Go-diagram. We show that no
reasonable description of the class of Go-diagrams in terms of forbidden
subdiagrams can exist by providing an injection from the set of valid
Go-diagrams to the set of minimal forbidden subdiagrams for the class of
Go-diagrams. In lieu of such a description, we offer an inductive
characterization of the class of Go-diagrams.
