Current State ID: 8
Current State Description: Block 'a' is held in the hand and no longer clear or on the table. Block 'd' remains clear and on the table. Block 'b' is on the table with block 'c' on top of it, both unchanged. The hand is not empty.

Child State ID: 14
Action Taken: stack(a, d)
State Description: Block 'a' is now on top of block 'd', making block 'a' clear. Block 'd' is no longer clear as it is supporting block 'a'. Block 'b' remains on the table with block 'c' on top of it, both unchanged. The hand is empty.

