This example demonstrates a minimal HTML page that runs a nested JavaScript loop in the browser console. The page contains no visible visualization, but instead logs pairs of variables `c` and `d` to the console using `console.log`. The code defines an array length of 4 and iterates through nested `for` loops, executing 20 iterations while printing the current values of the loop counters. The example illustrates basic scripting behavior within a bare HTML document, with commented-out alternative loops showing different iteration patterns.