1. Create a header with all the IDs
- open/create file
- start header file with "Source tRNA"
- get ID via regex UNI_DATE_ID_ENDING_#NO
- add ID to file
- close file

2. Create new files
-Titles:
5p-tR-halves
5p-tRFs
p-tR-halves
3p-CCA-tRFs
3p-tRFs
tRF-1
tRNA-leader
misc-tRFs

- add first column to each file:
MT-TA
MT-TC
MT-TD
MT-TE
...

3.
- print the according columns from each mergerpt file from each folder into the new file
- column assignment:
5p-tR-halves - 1
5p-tRFs - 2
p-tR-halves - 3
3p-CCA-tRFs - 4
3p-tRFs - 5
tRF-1 - 6
tRNA-leader - 7 
misc-tRFs - 8

4. Add the ID header to each file