Crochet a border.

Cast a chain of yarn A of the desired length, the number of stitches is a multiple of 6 stitches

Rows 1-6: crochet 1 dc in each stitch, turn. Change the color of the yarn.

Row 7: '1 dc in the first stitch of the 6th row, pull the yarn from the next stitch of the 5th row to the working level, crochet 2 stitches on the hook together (= dc with the stitch from the 5th row), crochet 1 sc with the stitch from the 4th row. 1 sc with the stitch from the 3rd row. 1 dc with the stitch from the 2nd row, 1 sc with the stitch from the 1st row, repeat from x.

 For the next color, row 7 becomes the first.

Repeat rows 2-7 for the pattern