bro if I tell you the next step, it will be the solution and anyone who view the comments will get the flag ..................focus on what these dots and spaces can represent. Spend some time on it . Try different things. I am sure you will get the flag.
Took me sometime to figure out the pattern but at the end it's amazing. All the comments before this do provide enough hint if you are stuck in this problem. The message is a long one and contains some text too other than the flag itself.