Each gust blows the leaf forward 5 feet, so 11 gusts will blow it forward 5 * 11 = <<5*11=55>>55 feet.
Each swirl after a gust blows it back 2 feet, so 11 swirls will blow it back 2 * 11 = <<11*2=22>>22 feet.
After 11 gusts, the leaf has traveled 55 - 22 = <<55-22=33>>33 feet down the sidewalk.
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