関連ワード:  how to decrease rib stitches    how to decrease rib stitch hat    how to decrease rib knit hat    how to decrease rib knit    how to cut rib knit fabric    how to shrink rib knit    how to decrease 1x1 rib stitch    how to decrease 1x1 rib stitch in the round    how to decrease 1x1 rib stitch hat    how to decrease 2 stitches in rib stitch