Cast on an even number of stitches to desired width.
Row 1: Using Color A, *k1, yarn to back, sl 1 purlwise, yarn to front; rep from * to end. Return to beginning of row WITHOUT turning work.
Row 2: Using Color B, *yarn to back, sl 1 purlwise, yarn to front, p1; rep from * to end. TURN.
Row 3: Using Color B, work same as Row 1.
Row 4: Using Color A, work same as Row 2.
Repeat these 4 rows for pattern. Finish off.
Note 1: Pattern is not worked in a circle.
Note 2: When turning work make sure yarns are crossed around each other to avoid leaving a hole between the layers.
Note 3: I would advise using a row counter or scratch pad to avoid missing any row combination.