Trinity Stitch

Multiples of 4 sts

Row 1 (right side): Purl across.
Row 2: *(K, P, K) all in next st, P3tog; repeat from * across
Row 3: Purl across.
Row 4: *P3tog, (K, P, K,) all in next st; repeat from * across.

Repeat rows 1-4 for pattern.