Alternate 2nd and 3rd section 10x, ending on 2nd section.
2nd section: 10x
3rd section: 9x
On the first row, p32, place marker, and purl the remaining (1st repeat is 45 stitches).
Repeat 1: 45 sts
Repeat 2: 61 sts
Repeat 3: 77 sts
Repeat 4: 93 sts
Repeat 5: 109 sts
Repeat 6: 125 sts
Repeat 7: 141 sts
Repeat 8: 157 sts
Repeat 9: 173 sts
Repeat 10: 189 sts (last)
Shown with a cast-on count of 45 stitches.