title: Pair of blocks in each?
body: <p>As in the standart cycle:</p>
  
  <pre><code>- @goods.each do |good|
    ???
  </code></pre>
  
  <p>...to organize this (HAML):</p>
  
  <pre><code>.columns-wrapper
    .column First good
    .column Second good
    .column Third good
  
  .columns-wrapper
    .column Fourth good
    .column Fifth good
    .column Sixth good
  </code></pre>