Cockie, I suspect you could check a couple of the more complex answers on here and it would likely tell you if you had the letters right without giving too much away to anyone still solving who didn't want to see
Eg 12d is four digits, one is zero and the other three divide by 3. 35a is 5 digits, with the last three being 37*the first two. 34a is 4 digits, 3 of which are the same. If your answers match those I suspect you have the right numbers.