Slip all stitches purl-wise.
Stitch Pattern (worked flat over a multiple of 6 sts plus 1)
Row 1 (RS): With C1, K across.
Row 2 (WS): With C1, P across.
Row 3: With C2, (K3, Sl1 WYIB, K2) to last st, K1.
Row 4: With C2, (K3, Sl1 WYIF, K2) to last st, K1.
Row 5: With C2, (P3, Sl1 WYIB, P2) to last st, P1.
Row 6: Rep Row 4.
Row 7: Rep Row 1.
Row 8: Rep Row 2.
Row 9: With C2, (Sl1 WYIB, K5) to last st, Sl1.
Row 10: With C2, Sl1, (K5, Sl1 WYIF) to end.
Row 11: With C2, (Sl1 WYIB, P5) to last st, Sl1.
Row 12: Rep Row 10.

For the crochet border:
The second row should end with Sc32 instead of Sc33.
The last line of the crochet border should read **Repeat from * to ** along top edge five more times. Sk1 st, (1tr, ch3, sc) in next st.