∀ {α : Type u} {r : Std.Rii α} [inst : Std.PRange.Least? α] [inst_1 : Std.PRange.UpwardEnumerable α]
  [inst_2 : Std.PRange.LawfulUpwardEnumerable α] [Std.PRange.LawfulUpwardEnumerableLeast? α]
  [inst_4 : Std.Rxi.IsAlwaysFinite α], List.Pairwise (fun a b => Std.PRange.UpwardEnumerable.LT a b) r.toList