@lmt, pode ter um exemplo assim? A resposta seria 7, no caso? //print(print(0,1,2,3,4),5,6,7,8,9,10,print(0,1,2,3,4),11);
            static Stm prog5 = new PrintStm(
                        new PairExpList(
                            new EseqExp(
                                    print1234,
                                    new NumExp(5)
                            ),
                            new PairExpList(
                                new NumExp(6),
                                new PairExpList(
                                        new NumExp(7),
                                        new PairExpList(
                                                new NumExp(8),
                                                new PairExpList(
                                                        new NumExp(9),
                                                        new PairExpList(
                                                                new NumExp(10),
                                                                new LastExpList(
                                                                        new EseqExp(
                                                                                print1234,
                                                                                new NumExp(11)
                                                                        )
                                                                )
                                                        )
                                                )
                                        )
                                )
                            )
                        )
            );