there nothing repeated , it is only the number 23B appear again as 23BB but for totally different image of a different match and was due that Images are (if you noticed) in the A's and B's not the same ;one has 51 and the other had 52, so instead of using the digit 52 i thought it would be proper to name one image differently and there would be an image at the B's with any match from A's ,... and without exceeding the number 51.
oUch i am terrible with quiz's administrating !!
as to continue the hint for 7A image ,its matches one (B's List) that has sort of a (ring) as at it in the title of that game..
huuhh? need more hints