Could someone give me the answer to puzzle number 167 in professor layton and the Curious Village?

In Professor Layton and the Curious Village, puzzle number 167, titled "A Matter of Life and Death," involves determining how many people can safely cross a bridge at night with limited resources. The solution requires careful planning and strategizing how to use the available torches and the order of crossing. If you need more specific details about the steps or logic involved, let me know!