title: Intersecting rows of Numpy 2d Array
body: <p>I need to get the indices of the intersecting rows of a main numpy 2d array A, with another 3 arrays B, C and D, and return another array E with that indices
  Example:</p>
  
  <pre><code>A = array([[1,1],
             [2,3],
             [2,4],
             [3,4],
             [3,5],
             [3,6],
             [4,5],
             [5,6]])
  
  B = array([[2,3],
             [4,3],
             [3,5]])
  
  C = array([[3,4],
             [3,5],
             [5,6]])
  
  D = array([[4,2],
             [5,4],
             [6,3]])
  RESULT ARRAY:
  [[1, 3, -2],
   [-3, 4, -6],
   [4, 7, -5]]
  </code></pre>
  
  <p>Note that when the columns are reversed the result of indice must assume (-)</p>
  
  <p>Exemple intersecting A and B:</p>
  
  <pre><code>A = array([[1,1],
             [2,3],
             [2,4],
             [3,4],
             [3,5],
             [3,6],
             [4,5],
             [5,6]])
  
  B = array([[2,3],
             [4,3],
             [3,5]])
  
  RESULT ARRAY:
  [1, -3, 4]
  </code></pre>
  
  <p>Intersecting row B: [4,3] with A: [3,4], return result -3, because the intersecting row are reversed</p>
  
  <p>Thank you!</p>