\forall (b: B).(\forall (c: C).(\forall (e1: C).(\forall (v: T).((clear c
(CHead e1 (Bind b) v)) \to (\forall (e2: C).(\forall (n: nat).((getl n e1 e2)
\to (getl (S n) c e2))))))))
\forall (b: B).(\forall (c: C).(\forall (e1: C).(\forall (v: T).((clear c
(CHead e1 (Bind b) v)) \to (\forall (e2: C).(\forall (n: nat).((getl n e1 e2)
\to (getl (S n) c e2))))))))