Fill matrix randomely without row-repetitions

Please help. I'm new to matlab scripting and need a bit of help. I have a series of numbers:

A=[1 1 1 2 2 2 3 3 3 4 4 4 5]

which I wants to fill randomely into a 8x12 matrix without having the same number in the same row. At the end I want all the "empty" cells of the 8x12 matrix being filled with 0's or nan. Thanks