CO 17 STS
Row 1 (WS): K2 [P1, K3 x3] P1, K2
Row 2 (RS): P1, [K3, P1 x3] K3, P1
Row 3 (WS): K2 [P1, K3 x3] P1, K2
Row 4 (RS): P1, [K3, P1 x3] K3, P1
Row 5 (WS): K2 [P1, K3 x3] P1, K2
Row 6 (RS): P1, 3/1/3 RPC, P1, 3/1/3 LPC, P1
Row 7 (WS): K2 [P1, K3 x3] P1, K2
Row 8 (RS): P1, [K3, P1 x3] K3, P1
Repeat rows 1 – 8 until desired length.