Words of affirmation, acts of service, then quality time.
I say that with the disclaimer that when you experience fulfillment in one language and lack in another, the results can be skewed so that the area that is lacking is more important. I also believe that the languages are fluid, meaning they can change over time. For a very long time, quality time was was much higher than acts of service, but as relationships unfold (and I struggle to maintain mobility), acts of service has become more important for me.