This is a remix of the question mark included in the original design to make it fit inside of the printed recess. You should be able to print 4 of these and super glue them into the recesses on the sides of the original Question Block found here: https://www.thingiverse.com/thing:2543257.

I uploaded a youtube video of 10 cool things to print when you're stuck indoors, and this question block is in that list. If you want to check it out, you can find it here: https://www.youtube.com/watch?v=Cp8cqAroWjw