This example generates two sets of alternating horizontal and vertical stripes from `d3.range` and renders them as SVG `rect` elements. Each set is clipped by a circular `mask` whose pattern is created from the `d3.symbols` and `d3.symbol` functions, producing a repeated geometric motif. The masks use contrasting fills—black for the first circle and white for the second—so the overlapping stripes appear to weave through the two shapes. The visualization runs entirely in the browser with D3 7.4.4, drawing to an SVG canvas sized by the window height.