2 rows in the grid represents a single crochet row. Each vertical pair of purple cells is a single double-crochet stitch.The background white colour represents chain spaces, so each vertical pair means create a single chain and skip the stitch below.
So Row 1, according to grid above (starting in lower right corner, after chaining 100 and adding 2-3 chains for your turn) would be made up of
1 dc (or your turning chains), 1dc, ch1 and skip 1 stitch, 5dc, chain 1 and skip 1, 3dc, chain 1 and skip 1, 3dc, chain 1 and skip 1, 1dc, chain 1 and skip 1, 3dc, chain 1 and skip 1, 3dc, chain 1 and skip 1, 5dc, etc, ending with 1dc.
Row 2 would start from bottom left of the grid and is represented by rows 3&4 in the grid (counting from the bottom). The first stitch, according to the pattern would be a chain 1 and skip 1, but since it is the beginning of the row, this is replaced with a dc, to act as a ‘border’. So the row starts with 4dc then follows with
chain 1 and skip 1, 3dc, chain 1 and skip 1, 3dc, chain 1 and skip 1, 3dc etc.
Row 3 starts with 4dc then chain 1 and skip 1, 1dc, chain 1 and skip 1, 3dc, chain 1 and skip 1, 3dc, chain 1 and skip 1, 5dc, chain 1 and skip 1, 3dc etc.
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