1<?xml version="1.0" encoding="UTF-8"?> 2<out>: Test for source tree numbering 3(A): Level A 4(A*1): Level B 5(A*2): Level B 6(A*2*1): Level C 7(A*3): Level B 8(A*3*1): Level C 9(A*3*1*1): Level D 10(B): Level A 11(B*1): Level B 12(B*1*1): Level C 13(B*1*1*1): Level D 14(B*1*1*1*1): Level E 15(C): Level A 16(C*1): Level B 17(C*1*1): Level C 18(C*1*1*1): Level D 19(C*1*1*1*1): Level E 20(C*1*1*2): Level D 21(C*1*1*2*1): Level E 22(C*1*2): Level C 23(C*1*2*1): Level D 24(C*2): Level B 25</out>