(multiple of 4 sts plus 2)
Rows 1, 3 and 5 (WS) P2, *[k into back and front of st] twice, p2; rep from * to end.
Rows 2, 4 and 6 K2, *[p2tog] twice, k2; rep from * to end.
Rows 7, 9 and 11 [K into back and front of st] twice, *p2, [k into back and front of st] twice; rep from * to end.
Rows 8, 10 and 12 [P2tog] twice, *k2, [p2tog] twice; rep from * to end.
Rep rows 1-12.