関連ワード:  how to decrease in 1x1 rib    how to decrease in 1x1 rib knitting    how to decrease 1x1 rib stitch hat    how to decrease 1x1 ribbed hat    how to decrease 1x1 ribbing in the round    how to decrease 1x1 rib stitch in the round    what is 1x1 rib    how to rib 2 together in 1x1 rib    difference between 1x1 rib and 2x2 rib