Shown with a cast-on count of 4 stitches.  

• Row 1 (RS): K1, yo, k2, yo, k1 (6 sts).
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Row 3: K2, yo, k2, yo, k2 (8 sts).
• Row 5: K1, M1R, k1, M1R, k1, yo, k2, yo, k1, M1L, k1, M1L, k1 (14 sts).
• Row 7: K1, M1R, k1, M1R, k4, yo, k2, yo, k4, M1L, k1, M1L, k1 (20 sts).
• Row 9: K1, M1R, k1, M1R, k7, yo, k2, yo, k7, M1L, k1, M1L, k1 (26 sts).
• Row 11: K1, M1R, k1, M1R, k10, yo, k2, yo, k10, M1L, k1, M1L, k1 (32 sts).
• Row 13: K1, M1R, k1, M1R, k13, yo, k2, yo, k13, M1L, k1, M1L, k1 (38 sts).
• Row 15: K1, M1R, k1, M1R, k16, yo, k2, yo, k16, M1L, k1, M1L, k1 (44 sts).
• Row 17: K1, M1R, k1, M1R, k19, yo, k2, yo, k19, M1L, k1, M1L, k1 (50 sts).
• Row 19: K1, M1R, k1, M1R, k22, yo, k2, yo, k22, M1L, k1, M1L, k1 (56 sts).