Currently i have this:

level-1-file.txt ......................................  File
level-2-file.txt ......................................  File
level-2-file-1.txt ......................................  File
level-3-file.txt ......................................  File
level-4-file.txt ......................................  File

I want to format it like this:

level-1-file.txt	......................................  File
level-2-file.txt	......................................  File
level-2-file-1.txt	......................................  File
level-3-file.txt	......................................  File
level-4-file.txt	......................................  File

...without using tab (\t)