Shown with a cast-on count of 30 stitches.  

• Row 1 (WS): *P6, k6, repeat from * to last 6 sts, p6.
• Row 2: *K5, p1, repeat from *.
• Row 3: *K4, p2, repeat from *.
• Row 4: *K3, p3, repeat from *.
• Row 5: *K2, p4, repeat from *.
• Row 6: *K1, p5, repeat from *.
• Row 7: *K6, p6, repeat from * to last 6 sts, k6.
• Row 8: *P5, k1, repeat from *.
• Row 9: *P4, k2, repeat from *.
• Row 10: *P3, k3, repeat from *.
• Row 11: *P2, k4, repeat from *.
• Row 12: *P1, k5, repeat from *.