* rec1a.ref

**$STRATEGY Applicative;

RecNumber {
   e.1 = <RecEnd <Rec (e.1) e.1>>;
 }

Rec {
  ( ) e.3 =  e.3;
  ((e.1) e.2 ) e.3 = <Rec (e.2)  <Rec1 (e.1) e.3>>;
 }

RecEnd {
 ( ) e.2 = ( ) <RecEnd e.2>;
  = ;
 }

Rec1 {
  ( ) ('1' e.2) e.3 = (e.2) e.3;
  ('1' e.1) (e.2) e.3 = (e.2) <Rec1 (e.1) e.3>;
 }1