Spirogyra is a very nice pattern to knit with, and plus the "oh -so" soft and pastel sweet colour yarn makes it a perfect combinations !! I SIMPLY can't resist not knitting it again.
My second time using the pattern for my 2-at-1-time on a 32" Addi Turbo Circular Needle, with my own calcuations and design, the slanting shell stitch pattern only starts to sprials around in opposite side on the leg.