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  <title>JS Alphabet Pattern 14 - Try It</title>
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  <h1>Step-by-two alphabet rows</h1>
  <p>Open the HTML code, tweak <code>start</code>, <code>outerEnd</code>, or <code>step</code>, then click Run.</p>
  <pre id=output></pre>
  <script>(()=>{const t="A".charCodeAt(0),e="I".charCodeAt(0);let o="";for(let n=t;n<=e;n+=2){let e="";for(let o=t;o<=n;o++)e+=String.fromCharCode(o);o+=e+"\n"}document.getElementById("output").textContent=o})()</script>
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JavaScript Alphabet Pattern 14 (Try It)