Current State ID: 44
Current State Description: Block 'a' is on the table and clear. Block 'c' is on top of block 'b' and clear. Block 'b' is on the table. Block 'd' is held in the hand. The hand is not empty.

Child State ID: 49
Action Taken: stack(d, c)
State Description: Block 'a' is on the table and clear. Block 'c' is on top of block 'b' and supporting block 'd'. Block 'b' is on the table. Block 'd' is on top of block 'c' and clear. The hand is empty.

