Cast on 39 sts.
Rows 1-4: Knit.
Row 5: K3, *K3P3* to last 3 sts, K3.
Row 6: K3, *P3K3* to last 3 sts, K3.
Row 7: Repeat row 5.
Row 8: Repeat row 6.
Row 9: K3, *P3K3* to last 3 sts, K3.
Row 10: K3, *K3P3* to lasts 3 sts, K3.
Row 11: Repeat row 9.
Row 12: Repeat row 10.
Rows 13-52: Repeat rows 5-12 five times.
Rows 53-56: Repeat rows 5-8.
Rows 57-61: Knit. You can knit four rows, but knitting five rows puts the casting off on the back of the dishcloth.
Cast off and weave in ends.