Children's hat

Pattern, Flies in the reverse field.
1-3 purl, yarn over, slip one without knitting.
2-1 yarn over, slip the stitch with the yarn over. 3 knit.
3-3 purl, 1 yarn over, slip the stitch with two yarn overs,
4-1 yarn over, slip the stitch with three yarn overs, 3 knit.
5-3 purl, knit the stitch with four yarn overs together as a purl stitch.
6-knit stitches.
7-repeat from the first. Arranging the flies in a checkerboard pattern.///That is, we knit: 1 purl.*1 yarn over, slip the stitch, 3 purl,*2 purl.