Start with 7 stitch.
In rounds 24-30, the second yarn over is to be dropped, leaving one stitch on the needle to each "yo twice". One must drop the first yo and then proceed with k2tog or ssk as indicated.
Round 31: 2tog, move marker, then move 2sts to the right hand needle, continue chart.
Crochet last row, 3 stitches together and 6 chain sts between them.