{σ : Type u_1} →
  (motive : (_ : (σ →₀ ℕ) × (σ →₀ ℕ)) × (σ →₀ ℕ) × (σ →₀ ℕ) → Sort u_2) →
    (x : (_ : (σ →₀ ℕ) × (σ →₀ ℕ)) × (σ →₀ ℕ) × (σ →₀ ℕ)) → ((_i j k l : σ →₀ ℕ) → motive ⟨(_i, j), (k, l)⟩) → motive x