Shown with a cast-on count of 21 stitches.  

• Round 1: Purl.
• Round 2: P1, *yo, ssk, [p1, k1 tbl] 4 times, repeat from *.
• Round 3: P1, *yo, p1, ssk, k1 tbl, [p1, k1 tbl] 3 times, repeat from *.
• Round 4: P1, *yo, k1 tbl, p1, ssk, [p1, k1 tbl] 3 times, repeat from *.
• Round 5: P1, *yo, p1, k1 tbl, p1, ssk, k1 tbl, [p1, k1 tbl] twice, repeat from *.
• Round 6: P1, *yo, [k1 tbl, p1] twice, ssk, [p1, k1 tbl] twice, repeat from *.
• Round 7: P1, *yo, [p1, k1 tbl] twice, p1, ssk, k1 tbl, p1, k1 tbl, repeat from *.
• Round 8: P1, *yo, [k1 tbl, p1] 3 times, ssk, p1, k1 tbl, repeat from *.
• Round 9: P1, *yo, [p1, k1 tbl] 3 times, p1, ssk, k1 tbl, repeat from *.
• Round 10: P1, *yo, [k1 tbl, p1] 4 times, ssk, repeat from *.
• Round 11: P1, *ssk, [p1, k1 tbl] 4 times, yo, repeat from *.
• Round 12: P1, *ssk, [k1 tbl, p1] 3 times, k1 tbl, yo, p1, repeat from *.
• Round 13: P1, *ssk, [p1, k1 tbl] 3 times, yo, k1 tbl, p1, repeat from *.
• Round 14: P1, *ssk, [k1 tbl, p1] twice, k1 tbl, yo, p1, k1 tbl, p1, repeat from *.
• Round 15: P1, *ssk, [p1, k1 tbl] twice, yo, [k1 tbl, p1] twice, repeat from *.
• Round 16: P1, *ssk, k1 tbl, p1, k1 tbl, yo, [p1, k1 tbl] twice, p1, repeat from *.
• Round 17: P1, *ssk, p1, k1 tbl, yo, [k1 tbl, p1] 3 times, repeat from *.
• Round 18: P1, *ssk, k1 tbl, yo, [p1, k1 tbl] 3 times, p1, repeat from *.
• Round 19: P1, *ssk, yo, [k1 tbl, p1] 4 times, repeat from *.
• Rounds 20-23: P1, *k1 tbl, p1, repeat from *.
• Repeat rounds 2-19.