proposition: Lemma size_cocode s : size (cocode s) = n.
proof: Proof. Proof using. by rewrite size_cocode_rec addn0. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(fingroup perm morphism presentation) mathcomp(ssralg poly ssrint) permcomp tools permuted combclass congr