Shown with a cast-on count of 20 stitches.  

• Rows 1 and 15 (RS): *K5, yo, k5, repeat from * (multiple of 11 sts).
• Rows 2 and 16: *P3, ssp, p6, repeat from * (multiple of 10 sts).
• Row 3: *K4, yo, k6, repeat from * (multiple of 11 sts).
• Row 4: *P4, ssp, p5, repeat from * (multiple of 10 sts).
• Row 5: *K3, yo, k7, repeat from * (multiple of 11 sts).
• Row 6: *P5, ssp, p4, repeat from * (multiple of 10 sts).
• Row 7: *K2, yo, k8, repeat from * (multiple of 11 sts).
• Row 8: *P6, ssp, p3, repeat from * (multiple of 10 sts).
• Row 9: *K8, yo, k2, repeat from * (multiple of 11 sts).
• Row 10: *Ssp, p9, repeat from * (multiple of 10 sts).
• Row 11: *K7, yo, k3, repeat from * (multiple of 11 sts).
• Row 12: *P1, ssp, p8, repeat from * (multiple of 10 sts).
• Row 13: *K6, yo, k4, repeat from * (multiple of 11 sts).
• Row 14: *P2, ssp, p7, repeat from * (multiple of 10 sts).