left
case left.inl.inr.right.a
A : Type
R : A → A → Prop
inhabited_A : Nonempty A
x y z : X
h✝¹ : x = X.b ∧ y = X.a
h✝ : z = X.c
⊢ ?left.inl.inr.right.b = X.b ∨ ?left.inl.inr.right.b = X.d
case left.inl.inr.right.a.h
A : Type
R : A → A → Prop
inhabited_A : Nonempty A
x y z : X
h✝¹ : x = X.b ∧ y = X.a
h✝ : z = X.c
⊢ ?left.inl.inr.right.b = X.b