It explains in detail.
For instance,
[ English name 1 ]----[ English name 2 ]-|
|---- English name 3.txt
|---- Japanese name 3. txt
In this case, it is possible to download it by sorting it without trouble.
However,
[ japanese name 1 ]----[ Japanese name 2 ]-|
|---- English name 3.txt
|---- Japanese name 3.txt
In this case, Japanese name. Txt cannot be downloaded when sorting it.
In both cases, English name 3.txt can be downloaded by sorting it without trouble.
Supplementation ・・・
[ **** ] = folder