How to get several box-and-whiskers in one plot?

Hi!

I have 5 vectors (let's say A,B,C,D,E), all having the same length (1,30). I wanted to be able to compare them all, in one single plot, having a box-and-whisker assigned to each vector - so that I could easily visualy compare their meadians, lower and upper whisker, etc.
How can I do that ? I've tried several ways (using bloxplot), but I allways get a single box-and-whisker in the plot. I really appreciate help!!

Thanks,

Sara