∀ {X : SSet} (f₀ f₁ f₃ : SSet.stdSimplex.obj (SimplexCategory.mk 2) ⟶ X)
  (h₀₂ :
    CategoryTheory.CategoryStruct.comp (SSet.stdSimplex.δ 2) f₁ =
      CategoryTheory.CategoryStruct.comp (SSet.stdSimplex.δ 1) f₃)
  (h₁₂ :
    CategoryTheory.CategoryStruct.comp (SSet.stdSimplex.δ 2) f₀ =
      CategoryTheory.CategoryStruct.comp (SSet.stdSimplex.δ 0) f₃)
  (h₂₃ :
    CategoryTheory.CategoryStruct.comp (SSet.stdSimplex.δ 0) f₀ =
      CategoryTheory.CategoryStruct.comp (SSet.stdSimplex.δ 0) f₁),
  (SSet.horn₃₂.desc.multicofork f₀ f₁ f₃ h₀₂ h₁₂ h₂₃).pt = X