Puzzle #549 - Transporting a thief
Biraj, a local thief, once entered the Pereira household. However, he wasn't adept at theft and half way through the robbery, he got caught in the act. The Pereiras were a family of 6, comprising a father, mother, 2 boys and 2 girls. A policeman arrived and caught the thief. He asked the whole family to come down with him to the police station to lodge a case against the thief. However, they had to cross a creek to get to the police station on the other side. All that was available was a raft that could only carry 2 people at any given time. They chained Biraj up so that he wouldn't get away. But it was still advisable not to leave any of the family members with him in the absence of the policeman, lest Biraj should cause them any harm. Also, Mr. Pereira, the father, could not be left with any of the daughters unless Mrs. Pereira was present, as the girls kept arguing in the absence of their mother. Also, Mrs. Pereira could not be left with any of the sons unless Mr. Pereira was present, as they kept hitting each other and Mrs. Pereira just could not control them. Only Mr. and Mrs. Pereira, Biraj and the policeman knew how to use a raft. But, Biraj obviously couldn't raft as he had been chained. Using the given data, deduce a plan to quickly get them all to cross the creek and have Biraj behind bars as soon as possible.