A full set would have a block for every letter of the alphabet.
I have 23 blocks:
I am missing blocks for the letters J, L, N but I have an object that would go in these 3 blocks.
I have the block for the letter X but no figure for that block.
Am sorry the set is not complete.
Children can open the blocks, play with the item inside
(which represents the letter on the block).
They can also match items with blocks.
OR just interlock blocks to build things.
Comes from a pet and smoke free environment.
I live in SE Naperville.