text: 'use strict';
  
  let counter = 1;
  
  function execNow(arg) {
    console.log(`${__filename} ${counter} ${arg}`);
    counter++;
  }
  
  console.log('A');
  
  const one = setImmediate(execNow, 'one');
  
  console.log('B');
  
  const two = setImmediate(execNow, 'two');
  
  console.log('C');
  
  const three = setImmediate(execNow, 'three');
  
  console.log('D');
  
  clearImmediate(one);
  
  console.log('E');
  
  clearImmediate(two);
  
  // Only three is called
  
  console.log('F');
  