This is T12321 plucking, once T12321 = 2 beats, remember...2 beats, and 1 bar is 4 beats...
That's why in the picture of bottom, its repeat 2 times.
There are 6 string in the picture, X means pluck that string, and please remember which finger pluck which string.
As you can see the first X is plucking on 5th string, actually is depend what chord u press, if C chord then start from 5th string. F start from 4th string, G start from 6th string.
This according the chord's picture in my blog, at ur right hand side got a small x, that means when u press that chord, you might start with that string...