Section Arg6.
Variable gf : rel6 T0 T1 T2 T3 T4 T5 -> rel6 T0 T1 T2 T3 T4 T5.
Arguments gf : clear implicits.

Theorem paco6_acc: forall
l r (OBG: forall rr (INC: r <6= rr) (CIH: l <6= rr), l <6= paco6 gf rr),
l <6= paco6 gf r.