d root
f file1
d dir2
f file3
f file4
e
f file5
f file6
d dir7
f file8
f file9
d dir10
f file11
f file12
d dir13
f file14
e
f file15
f file16
e
f file17
f file18
e
f file19
f file20
d dir21
f file22
f file23
d dir24
f file25
e
e
f file26
e