1<?xml version="1.0" encoding="UTF-8"?> 2<out>: Test for source tree numbering 3(1.): Level A 4(1.1.): Level B 5(1.2.): Level B 6(1.2.1.): Level C 7(1.3.): Level B 8(1.3.1.): Level C 9(1.3.1.1.): Level D 10(2.): Level A 11(2.1.): Level B 12(2.1.1.): Level C 13(2.1.1.1.): Level D 14(2.1.1.1.1.): Level E 15(3.): Level A 16(3.1.): Level B 17(3.1.1.): Level C 18(3.1.1.1.): Level D 19(3.1.1.1.1.): Level E 20(3.1.1.2.): Level D 21(3.1.1.2.1.): Level E 22(3.1.2.): Level C 23(3.1.2.1.): Level D 24(3.2.): Level B 25</out>