Let me take you down, 'cause i'm going to . . .
Let's grow strawberries!
But . . . all kids in the neighborhood are fond of strawberries, so we need to protect our precious plants by placing a fence.
The fence is made of 4 parts (a, b, c, d) and each of them has (but not necessarily) a different length. They are going to be placed around the field in a counterclockwise order....