Prince and Rakesh start walking from two different points 'A' and 'B', respectively. Prince walks 9 km north, then turns to the east and walks 7 km, then turns to the west and walks 5 km, and finally turns to the north and walks 6 km to reach point 'C'. Similarly, Rakesh walks 5 km north, then turns to the west and walks 9 km, and finally turns to the north, walks 10 km and meets Prince at point 'C'. What is the distance between Prince's and Rakesh's starting points?