Berry stitch
Cast on a multiple of 4 sts. (Try 44 sts.)
Row 1 (WS) K2, *(K1, P1, K1) into next st, p3tog; rep from * to last 2 sts, K2.
Rows 2 & 4 Purl.
Row 3 K2, *p3tog, (K1, P1, K1) into next st; rep from * to last 2 sts, K2.
Repeat these 4 rows to form pattern.