idnr: 1953
      3
  2    
    2  
4      
Difficulty: Very easy (0)
idnr: 4138
4   2  
  4   3
3   4  
  2   4
Difficulty: Super easy (0)
idnr: 322
  4    
      2
2      
    3  
Difficulty: Very easy (0)
idnr: 1730
  4    
3      
      2
    1  
Difficulty: Super easy (0)