Let's say playing in F, root at the 1st fret fourth string.
The run is
b7 b7 6 3 R
(flat-7, flat-7, 6th, 3rd, root)
The 6th and 3rd are the open second string and open third string. It's a fairly fast tempo run.
I'm trying to get clear annunciation of each note, but I'm finding it hard...