Make 2 swatches, each with smooth, light colored wool (fingering or sport weight) and needles size 5, 6 or 7,
Swatch 1: cast on 35 stitches. Purl 1 wrong side row.
Row 2: k4, *k2tog, yo, k1, yo, ssk, k6* repeat between *'s across, end last repeat k4 Row 3 and all wrong side rows: purl across
Row 4: k3, *k2tog, yo, k3, yo, ssk, k4* repeat between *'s across, end last repeat k3 Row 6: k2, *(k2 tog, yo) twice, k1, (yo, ssk) twice, k2* repeat between *'s across.
Row 8: k1 *(k2tog, yo) twice, k3, (yo, ssk) twice* repeat between *'s across, k1. Repeat rows 1-8 twice. Do not bind off.
Swatch 2: cast on 30 stitches. Purl 1 wrong side row. Row 1: k6, k2tog, yo, k13, yo, ssk, k6
Row 2 and all wrong side rows: purl across
Row 3: k5, k2tog, yo, k1, yo, ssk, k10, k2tog, yo, k1, yo, ssk, k5
Row 5: k4, k2tog, yo, k3, yo, ssk, k8, k2tog, yo, k3, yo, ssk, k4
Row 7: k3, k2tog, yo, k4, yo, ssk, k8, k2tog, yo, k4, yo, ssk, k3
Row 9: k2, k2tog, yo, k3, k2tog, yo, k1, yo, ssk, k6, k2tog, yo, k1, yo, ssk, k3, yo, ssk, k2
Row 11: k2, k2tog, yo, k2, k2tog, yo, k3, yo, ssk, k4, k2tog, yo, k3, yo, ssk, k2, yo, ssk, k2
Row 13: k2, k2tog, yo, k2, k2tog, yo, k3, yo, ssk, k4, k2tog, yo, k3, yo, ssk, k2, yo, ssk, k2
Row 15: k2, yo, k4, yo, sk2p, yo, k8, yo, sk2p, yo, k4, yo, ssk, k2
Purl back, do not bind off.
Note: If you are not a frequent lace knitter you can work swatch 2 in stockinette stitch.