Slip Stitch Knitting 23 in the round

How to knit the K1 uls.
Take the right-hand needle under the slipped threads, then pick up the next st on the left-hand needle and knit this st and the slipped threads together.

PATTERN IN THE ROUND
Cast on a multiple of 6 stitches.
Rounds 1, and 2 (RS): *Sl3 wyif, p3, repeat from *.
Rounds 3: *K3, p3, repeat from *.
Round 5: K1, *k1 uls, k5, repeat from * to last 4 sts, k1 uls, k4.
Round 6: *P3, k3, repeat from *.
Rounds 7, and 8: *P3, sl3 wyif, repeat from *.
Rounds 9, and 10: *P3, k3, repeat from *.
Rounds 11: K4, *k1 uls, k5, repeat from * to last 2 sts, k1 uls, k1.
Round 12: *K3, p3, repeat from *.
Repeat rows 1-12.

Worked flat, see Trellis Slip Stitch Knitting 23