Stitch no 7 is called Gate Stitch and is one of the many Canvas Stitches I have found in Mary Thomas's Dictionary of Embroidery Stitches.
I have not found a Swedish name, in French it is called Point de Porte. (Thank you Mattia).
Actually it is not an entirely new stitch to me; I worked a few of these gates on my piece Pile 'em On, last year.
In spite of looking advanced it is an easy stitch made up of straight lines, and it does certainly look like a gate!
First make four vertical stitches, then a cross and finally a horisontal stitch. On the next 'gate', the horisontal stitch is one level lower. The gates can also be placed without a gap and you then have a good filling stitch. In Mary Thomas's book the stitches are also placed at different levels making a nice pattern.
Here they are in a row with gaps on Aida.
Fill one of these boxes with Gate Stitches (no gaps and at different levels).