Has an AFL game ever ended 56-33?
Exactly once. On May 27, 1899, Fitzroy beat St Kilda 56-33, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 56-33 in league history.
That makes 56-33 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 57-33 has happened 1 times and 56-34 has happened never.