Analyze the map below and answer the question that follows.

A topographical map of Canada. Regions are circled and labeled 1 to 6. 1 is a mountain range on the west coast from Alaska in the north to the U S border in the south. 2 is a set of islands north of the mainland. 3 is plains region in Central Canada. 4 is area surrounding the Hudson Bay. 5 is a low area around the Great Lakes. 6 is a small mountain range along the east coast.

List the names of the regions labeled on the map above in numerical order.