k2, *yo, k3, sl1, k2tog, psso, k3, yo, k1; rep from *, end k2 instead of k1
If you start with 73 stitches, you'd use:
It adds up correctly. Are you knitting 2 tog when you do the psso?
When you get to the end, the last repeat will have
yo, k3, sl, k2tog, psso, k2, yo, k2