Convert Table to List

Hi, is there a way to convert data that looks like this table:

Style Jan Feb Mar
ABC 200 300 700
DEF 900 200 600

To become a list that looks like this:

Style Month Units
ABC Jan 200
ABC Feb 300
ABC Mar 700
DEF Jan 900
DEF Feb 200
DEF Mar 600


My data is much larger, of course, but this gives you an idea of what I am trying to accomplish. Thanks in advance!

Amy