Input (grade 10): Lakes in the canton include: parts of Lake Lucerne (VierwaldstÃ ttersee), Lake Sarnen (Sarnersee), Lungerersee, Wichelsee, Tannensee and Melchsee.
Output (grade 7): Lakes in the canton include: parts of Lake Lucerne, Lake Sarnen, Lungerersee, Wichelsee, Tannensee and Melchsee.