(2 CABINS / 1 HEAD)
(2 OR 3 CABINS / 1 HEAD)
(2 CABINS / 1 HEAD OR 3 CABINS / 2 HEADS)
(3 OR 4 CABINS / 3 HEADS)
(3, 4 OR 5 CABINS / 3 HEADS OR 4 CABINS / 4 HEADS)
(3, 4 OR 5 CABINS / 2, 3 OR 4 HEADS)