The new king of Einsteinia was a cruel man who hated 'Performing Arts' and hence started committing atrocities against performers especially those who performed with animals. One night, four jugglers, each one along with his monkey, attempted to cross a river and flee to Newtonia. It was safe not to swim across the river. All they had was a small raft that could accommodate a maximum of three living creatures at any given time. A monkey should not be present with other masters if its own master is not present, as in such a case the monkey creates huge noise which should be avoided. All the humans and only one monkey know how to raft. Devise a plan to help them flee Einsteinia safely in the least number of trips. Provide a detailed explanation for your answer.