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Butterfly stitch - KNITTING - YouTube

Butterfly stitch - though 20 row repeat only 4 rows to memorize. The reverse looks interesting too. Knitted in a multiple of 10 + 9 sts and repeat.

How to knit air bobble stitches 720p - YouTube

Knitting Resources - "How to Knit Air Bobble Stitches" (video) *Perfect to make a pineapple plush