Shown with a cast-on count of 13 stitches.  

• Row 1 (RS): *[P1, k1] 3 times, repeat from * to last st, p1.
• Row 2: *[P1, k1] 3 times, repeat from * to last st, p1.
• Row 3: *[P1, k2] twice, repeat from * to last st, p1.
• Row 4: *[P1, k2] twice, repeat from * to last st, p1.
• Row 5: *[P1, k1, p1] twice, repeat from * to last st, p1.
• Row 6: *[P1, k1, p1] twice, repeat from * to last st, p1.
• Row 7: *[K1, p1] 3 times, repeat from * to last st, k1.
• Row 8: *[K1, p1] 3 times, repeat from * to last st, k1.
• Row 9: *[K1, p2] twice, repeat from * to last st, k1.
• Row 10: *[K1, p2] twice, repeat from * to last st, k1.
• Row 11: *[K1, p1, k1] twice, repeat from * to last st, k1.
• Row 12: *[K1, p1, k1] twice, repeat from * to last st, k1.