Looping through about 10 bitmaps in the library and adding them to stage

programming flash
1

basically, I dont wanna do

var t:Array = []
var bitClass1 = new img1()
t[0] = new Bitmap(bitClass)

that basically gets the image with the class img1, from my library, however I want to do this for 10, without repeating that each time, possibly up to 30-40 images,

its very important I can do something like this

for (i = 0; i<20; i++)
{
    var c:Class = new Class("img"+i)
    t* = new c
}

getting images from 0-19

how can I do this?