$ ./new
0 -> 1
branch start
        branch choice start
                1 -> 2
                2 -> 3
                branch start
                        branch choice start
                                3 -> 4
                                4 -> 5
                        branch choice end
                branch end
        branch choice end
        branch choice start
                5 -> 6
                6 -> 7
                branch start
                        branch choice start
                                7 -> 8
                                8 -> 9
                                branch start
                                        branch choice start
                                                9 -> 10
                                                10 -> 11
                                                branch start
                                                        branch choice start
                                                                11 -> 12
                                                                12 -> 13
                                                                branch start
                                                                        branch choice start
                                                                                13 -> 14
                                                                                14 -> 15
                                                                        branch choice end
                                                                branch end
                                                        branch choice end
                                                        branch choice start
                                                                15 -> 16
                                                                16 -> 17
                                                                branch start
                                                                        branch choice start
                                                                                17 -> 18
                                                                                18 -> 19
                                                                        branch choice end
                                                                branch end
                                                        branch choice end
                                                branch end
                                                branch start
                                                        branch choice start
                                                                19 -> 20
                                                                20 -> 21
                                                        branch choice end
                                                branch end
                                        branch choice end
                                        branch choice start
                                                21 -> 22
                                                22 -> 23
                                                branch start
                                                        branch choice start
                                                                23 -> 24
                                                                24 -> 25
                                                        branch choice end
                                                branch end
                                        branch choice end
                                branch end
                        branch choice end
                branch end
        branch choice end
branch end
25 -> 26
NULL