The next thing to pay attention to are those sets of three characters. They denote the permissions, in symbolic form, that each class has for a given file.
In each triad, read, write, and execute permissions are represented in the following way:
Read: Indicated by an r in the first position
Write: Indicated by a w in the second position
Execute: Indicated by an x in the third position. In some special cases, there may be a different character here