∀ {C : Type u_1} {D : Type u_2} [inst : CategoryTheory.Category.{v_1, u_1} C]
  [inst_1 : CategoryTheory.Category.{v_2, u_2} D] [inst_2 : CategoryTheory.HasShift C ℤ]
  [inst_3 : CategoryTheory.HasShift D ℤ] (F : CategoryTheory.Functor C D) [inst_4 : F.CommShift ℤ]
  [inst_5 : CategoryTheory.Limits.HasZeroObject C] [inst_6 : CategoryTheory.Preadditive C]
  [inst_7 : ∀ (n : ℤ), (CategoryTheory.shiftFunctor C n).Additive] [inst_8 : CategoryTheory.Pretriangulated C]
  [inst_9 : CategoryTheory.Limits.HasZeroObject D] [inst_10 : CategoryTheory.Preadditive D]
  [inst_11 : ∀ (n : ℤ), (CategoryTheory.shiftFunctor D n).Additive] [inst_12 : CategoryTheory.Pretriangulated D]
  [F.IsTriangulated], F.op.IsTriangulated