Turning Stitch, version II,  2+tl+3 (Karbenning Stitch)

2+tl+3
tl = 1 loop is 'turned', needle tip to left

Video (link) 

Hansen's Notation (modified)
UUU/O\U OOO/UUUUOOO

You can read more about the Finnish Turning Stitches on page Stitch Grouping by Toini-Inkeri Kaukonen (link).