Jakub Wąsik

# There is a mistake in this [question](https://app.devfaq.pl/questions/p/230).  It is written that __"{dklf(df(kl))d]{}"__ is a valid test case while it is not due to the not opened "[". Please...

There is no defined variable as `ls`. Probably was supposed to be `lsProcess` instead. Renamed all occurrences of `ls` with `lsProcess` so the code works.