$VAR1 = [
  [
    [
      [
        [
          'Silicium'
        ],
        'Glas'
      ],
      [
        'Wood'
      ],
      [
        'Pizza'
      ],
      'Window'
    ],
    [
      'Door'
    ],
    'House'
  ],
  'Building'
];

               |                
           <Building>           
               |                
            <House>             
            /---------------\   
            |               |   
        <Window>          <Door>
    /--------+-------\          
    |        |       |          
  <Glas>   <Wood> <Pizza>       
    |                           
<Silicium>