Instance paco6_inst  T0 T1 T2 T3 T4 T5 (gf : rel6 T0 T1 T2 T3 T4 T5->_) r x0 x1 x2 x3 x4 x5 : paco_class (paco6 gf r x0 x1 x2 x3 x4 x5) :=
{ pacoacc    := paco6_acc gf;
  pacomult   := paco6_mult gf;
  pacofold   := paco6_fold gf;
  pacounfold := paco6_unfold gf }.Definition monotone6_2 T0 T1 T2 T3 T4 T5 (gf: rel6 T0 T1 T2 T3 T4 T5 -> rel6 T0 T1 T2 T3 T4 T5 -> rel6 T0 T1 T2 T3 T4 T5) :=
  forall x0 x1 x2 x3 x4 x5 r_0 r_1 r'_0 r'_1 (IN: gf r_0 r_1 x0 x1 x2 x3 x4 x5) (LE_0: r_0 <6= r'_0)(LE_1: r_1 <6= r'_1), gf r'_0 r'_1 x0 x1 x2 x3 x4 x5.

Theorem paco6_2_1_acc: forall l r_0 r_1 (OBG: forall rr (INC: r_1 <6= rr) (CIH: l <_paco_6= rr), l <_paco_6= paco6_2_1 gf_0 gf_1 r_0 rr), l <6= paco6_2_1 gf_0 gf_1 r_0 r_1.