.wrapper
  - var i = 0;
  - for (; i++ < 7;) {
    - if (i%2 == 0) {
    - var x = 8;
    - } else {
    - var x = 7;
    - }
    .container
      - var j = 0;
      - for (; j++ < x;) {
        .cube
          .side.front
          .side.back
          .side.left
          .side.right
          .side.bottom
          .side.top
      - }
   - }