CO 20 STS
Row 1: *YO, S1PW, K1, PSSO, K8*
Rows 2, 4, 6, 8, 10, 12: *P*
Row 3: *K1, YO, S1PW, K1, PSSO, K5, K2TOG, YO*
Row 5: *K2, YO, S1PW, K1, PSSO, K3, K2TOG, YO, K1*
Row 7: *K5, YO, S1PW, K1, PSSO, K3*
Row 9: *K3, K2TOG, YO, K1, YO, S1PW, K1, PSSO, K2*
Row 11: *K2, K2TOG, YO, K3, YO, S1PW, K1, PSSO, K1*
Repeat rows 1-12, until desired length