| 15 |   | [[1,1],[1,2]*,[1,4],[1,5],[1,8],[1,9],[1,12],[1,13],[1,14],[1,18],[1,19]*] | 
          
          
            | 16 |   | [[2,4],[2,6],[2,7],[2,9],[2,11],[2,15],[2,16],[2,17],[2,18],[2,19],[2,20]] | 
          
          
            | 17 |   | [[3,1],[3,2],[3,4],[3,5],[3,7],[3,10],[3,12],[3,13],[3,19]] | 
          
          
            |   | 15 | [[1,1],[1,2]*,[1,3],[1,4],[1,5],[1,8],[1,9],[1,12],[1,13],[1,14],[1,18],[1,19]*] | 
          
          
            |   | 16 | [[2,4],[2,6],[2,7],[2,9],[2,11],[2,13],[2,15],[2,16],[2,17],[2,18],[2,19],[2,20]] | 
          
          
            |   | 17 | [[3,1],[3,2],[3,4],[3,5],[3,7],[3,8],[3,10],[3,12],[3,13],[3,19]] | 
          
        
        
          
            | 19 |   | [[5,5],[5,18],[5,19]] | 
          
          
            | 20 |   | [[6,1]&,[6,2]&,[6,4]] | 
          
          
            | 21 |   | [[7,1]&,[7,2],[7,4],[7,8],[7,9],[7,11],[7,12],[7,15],[7,16],[7,18],[7,19]&] | 
          
          
            | 22 |   | [[8,1],[8,2]&,[8,19]&,[8,20]&] | 
          
          
            | 23 |   | [[9,1]&,[9,2],[9,9],[9,14],[9,19]&,[9,20]] | 
          
          
            | 24 |   | [[10,1]&,[10,2],[10,10],[10,11],[10,15],[10,16],[10,19]] | 
          
          
            | 25 |   | [[11,2]&,[11,10]&,[11,11]&,[11,12]&,[11,18],[11,19]&] | 
          
          
            | 26 |   | [[12,2]&,[12,10],[12,12]*,[12,14],[12,18]] | 
          
          
            | 27 |   | [[13,1]&,[13,2],[13,19]&] | 
          
          
            | 28 |   | [[14,2]&,[14,4],[14,11],[14,14],[14,19]&,[14,20]&] | 
          
          
            | 29 |   | [[15,2]&,[15,3],[15,6],[15,10],[15,12],[15,13],[15,15],]15,20]&] | 
          
          
            | 30 |   | [[16,4],[16,6],[16,7],[16,11],[16,19],[16,20]&] | 
          
          
            |   | 19 | [[5,5],[5,18],[5,19],[5,20]] | 
          
          
            |   | 20 | [[6,1],[6,2],[6,4]] | 
          
          
            |   | 21 | [[7,1],[7,2],[7,4],[7,8],[7,9],[7,11],[7,12],[7,15],[7,16],[7,18],[7,19]] | 
          
          
            |   | 22 | [[8,1],[8,2],[8,19],[8,20]] | 
          
          
            |   | 23 | [[9,1],[9,2],[9,9],[9,14],[9,19],[9,20]] | 
          
          
            |   | 24 | [[10,1],[10,2],[10,10],[10,11],[10,15],[10,16],[10,19]] | 
          
          
            |   | 25 | [[11,2],[11,10],[11,11],[11,12],[11,18],[11,19]] | 
          
          
            |   | 26 | [[12,2],[12,10],[12,12]*,[12,14],[12,18]] | 
          
          
            |   | 27 | [[13,1],[13,2],[13,19]] | 
          
          
            |   | 28 | [[14,1],[14,2],[14,4],[14,11],[14,14],[14,19],[14,20]] | 
          
          
            |   | 29 | [[15,2],[15,3],[15,6],[15,10],[15,12],[15,13],[15,15],]15,20]] | 
          
          
            |   | 30 | [[16,4],[16,6],[16,7],[16,11],[16,19],[16,20]] | 
          
        
        
          
            | 32 |   | [[18,2],[18,5]&,[18,7]&,[18,9]&,[18,10],[18,11]&,[18,13]&,[18,14],[18,15],[18,19],[18,20]] | 
          
          
            | 33 |   | [[19,1]&,[19,3]*,[19,5]&,[19,4],[19,9],[19,11],[19,12],[19,13],[19,14],[19,15],[19,17]] | 
          
          
            |   | 32 | [[18,2],[18,5],[18,7],[18,9],[18,10],[18,11],[18,12],[18,13],[18,14],[18,15],[18,19],[18,20]] | 
          
          
            |   | 33 | [[19,1],[19,3]*,[19,5],[19,4],[19,9],[19,11],[19,12],[19,13],[19,14],[19,15],[19,17]] |