.
./files.txt
./RB-QD04-0037-01-01_02.pdf
./reports
./reports/CAT3_Uesugi
./reports/CAT3_Uesugi/CAT3_Uesugi-RB-QD04-0037-01-01_02_MU.pdf
./reports/CAT3_Uesugi/CAT3_Uesugi-RB-QD04-0037-01-01_02_MU.txt
./sample.txt
./tree.txt