Human Resource Machine/Year 1

Strategy
In this year, you are introduced to your very first two instructions: INBOX and OUTBOX. There are three items on the IN conveyor belt, and you must move these three items to the OUT conveyor belt. With nothing but these two commands at your disposal, you have no choice but to do the brute force approach. Simply generate a program that tells the worker to pick up an item from the IN conveyor, and drop it on the OUT conveyor, and repeat those instructions two more times. The result will look as follows:
 * INBOX:This command instructs the user to run over to the IN conveyor belt and pick up the item at the very top. Any item currently being held in the workers hands (if any) will be discarded.
 * OUTBOX:This command instructs the user to run over to the OUT conveyor belt and drop whatever item happens to be in his hands at the moment. Note that if you instruct the worker to run to the OUT conveyor when he is holding nothing in his hands, that will result in an error.

INBOX OUTBOX INBOX OUTBOX INBOX OUTBOX

Optimizing
It is not possible to further optimize this solution.