Current State ID: 1
Current State Description: Block a is on block b, block c is on the table, and block d is held in the hand. Blocks a and c are clear. The hand is not empty.

Child State ID: 3
Action Taken: put-down(d)
State Description: Block a is on block b, block c is on the table, and block d is on the table. Blocks a, c, and d are clear. The hand is empty.

Child State ID: 4
Action Taken: put-down(d)
State Description: Block a is on block b, block c is on the table and clear, block d is on the table and clear. The hand is empty.

