File:Youngdiag2-1.png

Created using Wolfram Mathematica 8 with the code:

Graphics[{Line[{{0, 0}, {2, 0}, {2, -1}, {1, -1}, {1, -2}, {0, -2}, {0, 0}}],  Line[{{0, -1}, {1, -1}}], Line[{{1, 0}, {1, -1}}]}]