Current State ID: 8
Current State Description: The hand is empty. Block a is on the table and clear. Block b is on the table with block d on top of it. Block c is on the table and clear. Block d is on block b and is clear.

Child State ID: 11
Action Taken: pick-up(a)
State Description: The hand is holding block 'a'. Block 'a' is no longer on the table or clear. Block 'b' is on the table with block 'd' on top of it. Block 'c' is on the table and clear. Block 'd' is on block 'b' and is clear.

Child State ID: 13
Action Taken: pick-up(c)
State Description: The hand is holding block c. Block a is on the table and clear. Block b is on the table with block d on top of it. Block d is on block b and is clear. Block c is no longer on the table and is not clear.

