Current State ID: 9
Current State Description: Block `c` is now held in the hand and is no longer on block `b`. Block `b` is on the table and is clear. Block `a` is on block `d` and is clear. Block `d` remains on the table but is supporting block `a`. The hand is holding block `c`.

Child State ID: 13
Action Taken: put-down(c)
State Description: Block `a` is on block `d` and is clear. Block `b` is on the table and is clear. Block `c` is on the table and is clear. Block `d` is on the table and is supporting block `a`. The hand is empty.

