Wait, it’s probably more clear if I just type out this part of the pattern!
Row 1 (WS): K2,*Sl1, K1 repeat from * to end.
Row 2 and all even rows: K
Row 3: P
Row 5: P2, *K1, (Sl1,K1) 5 times, P5, K2, P2, K1, Sl1, K2, Sl1, K1, P2, K2, P5, K1, (Sl1, K1) 5 times, P4, repeat from * once, ending with P2 instead of P4.
Row 7: P3, *K1, (Sl1,K1) 5 times, P9, K1, P2, K1, P9, k!, (Sl1, K1) 5 times, P6, repeat from * once, ending with P3 instead of P6.
Row 9: K1, *P3, K1, (Sl1, K1) 8 times, P3, K2, P3, K1, (Sl1, K1) 8 times, P3, K2, repeat from * once, ending with K1 instead of K2.
Row 11: P1, *K1, P9, K1, (Sl1,K1) 5 times, P6, K1, (Sl1, K1) 5 times, P9, K1, P2, repeat from * once, ending with P1 instead of P2.
Row 13: K1, *Sl1, K1, P2, K2, P5, K1, (Sl1, K1) 5 times, P4, K1, (Sl1, K1) 5 time, P5, K2, P2, K1, Sl1, K2, repeat from * once, ending with K1 instead of K2.
Row 15: P
Row 17: K2,*Sl1, K1 repeat from * to end.
Cast off.