Interesting stuff - A quick visit to IMDB shows there are films titled 1a,11a also 8d (it gets a rating of 1.6 😂) also 17a and, naturally, a few called 25a, then probably the most well known 3d,26a - there's even a Woody Allen film 7d,12d but his is plural so probably doesn't count. Then there's one called 10a and, at least 2 called 23d, a few called 12d and, believe it or not, a film titled 16d,4d! I was really hoping there would be one named 14d but that, alas, no 😥
I'm sure these are just a coincidence as there are so many films and only so many catchy titles - still, it was fun trawling through them.