I did a chainless foundation, chainless starting stitches, and no border.

ROW 1: With Color A, with J hook, fhdc 21.
ROW 2: With Color B, with H hook, chdc in first st, * mhdc over same and next st, rep from * across, turn.
ROW 3: With Color A, chdc in first st, hdc in next st and across, turn.
Rep rows 2 and 3 until piece is relatively square.