class prog3 {
static Stm prog = 
  new CompoundStm(
     new AssignStm("c",new NumExp(1)),
     new PrintStm(
	new PairExpList(
	   new IdExp("c"), 
	   new LastExpList(
	      new EseqExp(
		 new AssignStm("c", new EseqExp(
				       new PrintStm(new PairExpList(
							new IdExp("c"), 
							new PairExpList(new NumExp(2), new LastExpList(new NumExp(3))))),
				       new NumExp(4))),
		 new IdExp("c"))))));

}