d3.range(23). [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22]. d3.range(3, 23, 2). [3,5,7,9,11,13,15,17,19,21]. d3.range(23, 3, -2).
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