​Knit Triangles with Slipped Stitches

1^st row: purl;

2^nd and all the even rows: due to the pattern;

3^rd row: purl;

5^th row: * 1 purl from the st, which is 4 rows lower (take off the sts above it), 9 purls*; repeat from * to *;

7^th row: purl;

9^th row: * 1 purl, 1 purl from the st, which is 4 rows lower, 7 purls, 1 purl from the st, which is 4 rows lower*; repeat from * to *;

11^th row: purl;

13^th row: * 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower, 5 purls, 1 purl from the st, which is 4 rows lower, 1 purl*; repeat from * to *;

15^th row: purl;

17^th row: 1 purl, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower, 3 purls, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower*; repeat from * to *;

19^th row: purl;

21^st row: 5 purls, 1 purl from the st, which is 4 rows lower, 4 purls*; repeat from * to *;

25^th row: * 4 purls, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower, 3 purls*; repeat from * to *;

27^th row: purl;

29^th row: * 3 purls, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower, 2 purls*; repeat from * to *;

31^st row: purl;

33^rd row: * 2 purls, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower, 1 purl, 1 purl from the st, which is 4 rows lower*; repeat from * to *.