JQuery rollover image

JQuery rollover image

I have 3 main images on my page. (but i want to put 9 images there -

(image1) (image2) (image3)
(image1b) (image2a) (image3a)
(image1c) (image2c) (image3b)

)

the page will be like this 
(image1) (image2) (image3)

I wanna know whats the jquery for ...:
When i hover over image1...
i want image 2 and 3 to change to image 2a and 3a...

When i hover over image2...
i want image 1 and 3 to change to image 1b and 3b...

When i hover over image3...
i want image 1 and 2 to change to image 1c and 2c...