Three big lions and three little lions are going to cross the river?

First, transport a big lion and a little lion across the river to get the big lion ashore, then use the little lion to get the big lion up in the boat, and put the two big lions on the boat to get the little lion up. Get the lion and the lion. The big lion and the little lion will go back together. Lift the big lion. The little lion and the little lion go back together.

I don't know if it's right to try.