d into B gives A.
   |
   | Peirce, 'Collected Papers', CP 3.123.

And though he is well aware that it is not at all necessary to arrange
elementary relatives into arrays, matrices, or tables, when he does so
he tends to prefer organizing dyadic relations in the following manner:

   [  A:A   A:B   A:C  |
   |                   |
   |  B:A   B:B   B:C  |
   |                   |
   |  C:A   C:B   C:C  ]

That conforms to the way that the last school of thought
I matriculated into stipulated that we tabulate