Let’s say that the farmer is transporting the wolf, the sheep and the cabbage from point A to point B.

1. Farmer transports the sheep from A to B.
2. Farmer goes back to A.
3. Farmer transports the cabbage from A to B.
4. Farmer transports the sheep back from B to A.
5. Farmer transports the wolf from A to B.
6. Farmer goes back to A.
7. Farmer transports the sheep from A to B.