tricky SQL

I have a table with 3 columns: Person, Class and grade. There are unlimited number of classes available but each person can only take 3 classes max. How do you right one SQL to show the list of class and grade of each person in one row?

Example: Table T

p1 c1 A
p1 c2 D
p1 c3 B
p2 c5 B
p3 C1 A
p3 C8 C
...
...

SQL result
P1 C1 A C2 D C3 B
P2 C5 B
P3 C1 A C8 C Received on Thu Mar 03 2005 - 09:16:46 CST