Row 9: K3, yo, k1, purl to last 4 sts, k4. (10 sts)
Repeat Rows 6, 7, 8, & 9 until the cloth is your desired width, ending with Row 9.
Corners: (I use short rows for a neater corner. If you do not wish to make your corners this way, I put the short row corner in brackets, so you can eliminate that portion and just do the row as written.)