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