1,663,200 words.
you just do 11! [factorial] over 3! 2! 2! [! is factorial] just dont multiply the 3 factorials together
it should come out to
11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
--------------------------------------...
3 x 2 x 1 , 2 x 1 , 2 x 1
Hope this helped! :D