title: insert list element into a 2nd list of lists at intervals of 2 in python
body: <p>I was wondering how to insert each element in a list into a second list of lists at intervals of 2 with the 1st insertion at the beginning of the list of lists.</p>
  
  <pre><code>lis1 = [['g'],['h'],['i']]
  lis2 = [['a'],['b'],['c'],['d'],['e'],['f']]
  
  Expected = [['g'],['a'],['b'],['h'],['c'],['d'],['i'],['e'],['f']]
  </code></pre>
  
  <p>My thought process is to set pos to 2 and check while length of lis1 is greater than 0, pop element at index 0 (first index) and insert into lis2 and move to the next 2 positions but I am not sure of how to start or if my thought process is possible.</p>