1var data = [
2    ["colours", "green", "blue"],
3    ["shapes", "square", "triangle"],
4    ["languages", "javascript", "c++"]
5];
6
7var svg = d3.select("body")
8    .append("svg")
9    .attr("width", 500)
10    .attr("height", 200);
11
12var groups = svg.selectAll("groups")
13    .data(data)
14    .enter()
15    .append("g")
16    .attr("transform", (d, i) => "translate(" + (50 + i * 100) + ",0)");
17
18var texts = groups.selectAll("texts")
19    .data(d => d)
20    .enter()
21    .append("text")
22    .attr("y", (d, i) => 10 + i * 20)
23    .text(d => d);