Shown with a cast-on count of 3 stitches.  

• Row 1 (RS): [K1, yo] twice, k1 (5 sts).
• Row 2: P1, yo, p3, yo, p1 (7 sts).
• Row 3: K1, yo, k5, yo, k1 (9 sts).
• Row 4: P1, yo, p7, yo, p1 (11 sts).
• Row 5: K1, yo, k9, yo, k1 (13 sts).
• Row 6: P1, yo, p11, yo, p1 (15 sts).
• Row 7: K1, yo, k13, yo, k1 (17 sts).
• Row 8: P1, yo, p15, yo, p1 (19 sts).
• Row 9: K1, yo, k17, yo, k1 (21 sts).
• Row 10: P1, yo, p19, yo, p1 (23 sts).
• Row 11: K1, yo, k21, yo, k1 (25 sts).
• Row 12: P1, yo, p23, yo, p1 (27 sts).
• Row 13: K1, yo, k25, yo, k1 (29 sts).
• Row 14: P1, yo, p27, yo, p1 (31 sts).