Eyelet Lace 42: Fir Tree

PATTERN
Cast on a multiple of 19 sts, +1.
Row 1 (RS): P1, *yo, k3, ssk, p8, k2tog, k3, yo, p1, repeat from *.
Rows 2, 4, 6, 8, and 10: Purl.
Row 3: P1, *k1, yo, k3, ssk, p6, k2tog, k3, yo, k1, p1, repeat from *.
Row 5: P1, *k2, yo, k3, ssk, p4, k2tog, k3, yo, k2, p1, repeat from *.
Row 7: P1, *k3, yo, k3, ssk, p2, k2tog, k3, yo, k3, p1, repeat from *.
Row 9: P1, *k4, yo, k3, ssk, k2tog, k3, yo, k4, p1, repeat from *.
Repeat rows 1-10.
Worked in the round, see Eyelet Lace 42 in the round