Corollary paco6_2_0_mult: forall r_0 r_1,
  paco6_2_0 gf_0 gf_1 (paco6_2_0 gf_0 gf_1 r_0 r_1) (paco6_2_1 gf_0 gf_1 r_0 r_1) <6= paco6_2_0 gf_0 gf_1 r_0 r_1.Corollary paco6_2_1_mult: forall r_0 r_1,
  paco6_2_1 gf_0 gf_1 (paco6_2_0 gf_0 gf_1 r_0 r_1) (paco6_2_1 gf_0 gf_1 r_0 r_1) <6= paco6_2_1 gf_0 gf_1 r_0 r_1.

(* Specifications: *)
Theorem paco6_2_0_fold: forall r_0 r_1, gf_0 (upaco6_2_0 gf_0 gf_1 r_0 r_1) (upaco6_2_1 gf_0 gf_1 r_0 r_1) <6= paco6_2_0 gf_0 gf_1 r_0 r_1.
Theorem paco6_2_1_fold: forall r_0 r_1, gf_1 (upaco6_2_0 gf_0 gf_1 r_0 r_1) (upaco6_2_1 gf_0 gf_1 r_0 r_1) <6= paco6_2_1 gf_0 gf_1 r_0 r_1.
Theorem paco6_2_0_unfold: forall (MON: monotone6_2 gf_0) (MON: monotone6_2 gf_1) r_0 r_1, paco6_2_0 gf_0 gf_1 r_0 r_1 <6= gf_0 (upaco6_2_0 gf_0 gf_1 r_0 r_1) (upaco6_2_1 gf_0 gf_1 r_0 r_1).
Theorem paco6_2_1_unfold: forall (MON: monotone6_2 gf_0) (MON: monotone6_2 gf_1) r_0 r_1, paco6_2_1 gf_0 gf_1 r_0 r_1 <6= gf_1 (upaco6_2_0 gf_0 gf_1 r_0 r_1) (upaco6_2_1 gf_0 gf_1 r_0 r_1).