Write a function named centeredSquares() that draws a set of squares of different size around a common center point. centeredSquares() takes four parameters. The first parameter is the length of the side of the first square to draw. The second parameter is the number of squares to draw. The third parameter is how much bigger (or smaller) the length of the side of each succeeding square should be. The fourth parameter is a pen object.

so far i have:

```
def square(side,p):
for i in range(4):
p.forward(side)
p.right(90)
def centSquare(len,num,inc,p):
for i in range(num):
??
```