title: Copy Paste data from columns of dynamic length
body: <p>In an Excel file, I have 2 tabs: Input and Output.</p>
  
  <p>In the tab Input, I have in column A, a list of codes like: code001, and it goes indefinitely, since I am adding more and more.</p>
  
  <p>In column B I have a list of keywords like: blue dress, red pencil, white scarf, ... again I don't have the number of keywords since I am adding more and more.</p>
  
  <p>On columns C and D, I have the same structure as A and B.
  (The file structure cannot be changed!)</p>
  
  <p>I want to put on the tab Output, on Column A, the codes (column A and column C from tab Input) and on column B, the keywords (column B and column D from the tab Input).</p>
  
  <p>How can I go through all the columns and the rows, with a while cycle/function?</p>