Can someone please help me with this task?

I have 2 worksheets I need to match to find entries that don't apprear in
the other worksheet. Worksheet3 shows rows from Worksheet1 that don't appear
in Worksheet2. Worksheet4 shows rows from Worksheet2 that don't appear in
Worksheet1.

Example:
worksheet1 worksheet2 worksheet3
worksheet4
A B C <= cols = A B C <= cols = A B C <= cols = A B C
a b 1 a b 1 a b 2
b n 1
a b 2 a b 3 c h 5
d f 3
a b 3 b n 1 d f 1
c h 3 c h 3
c h 5 c h 7
c h 7 d f 3
d f 1

Thank you,
Victor