Current State ID: 8
Current State Description: Block a is on block b and clear. Block c is held in the hand. Block d is on the table and clear. The hand is holding block c.

Child State ID: 12
Action Taken: stack(c, a)
State Description: Block a is on block b and supporting block c. Block c is on block a and clear. Block d is on the table and clear. The hand is empty.

