Current State ID: 50
Current State Description: The hand is holding block 'd'. Block 'b' is now clear and on the table. Block 'a' is on block 'c', and block 'c' is on the table. The diagram will show block 'd' being held by the hand, with block 'b' clear and on the table.

Child State ID: 57
Action Taken: stack(d, b)
State Description: The hand is now empty. Block 'd' is on block 'b', and block 'b' is no longer clear. Block 'a' is on block 'c', and block 'c' is on the table. The diagram will show block 'd' on top of block 'b', with the hand empty.

