I am trying to draw a venn diagran by hand for each of these combinations of sets A,B, and C

$\displaystyle (A - B) \cup (A - C) \cup (B - C)$

This has me rather stumped.

What i did was shade in all of A, B, C

Then started taking away B from A, C from A, and finally C from B

Which left me with what you see in the attached pic. Is this correct?

If not can you help!

Thank you