Best out of 3 multi-dice rolls

Is there a way to get the best out of 3 rolls in a macro.  My example is rolling for Stats. My DM likes the idea of just rolling 4d6kh3 for each stats IN ORDER, and from there you build your character.  Is there a way to roll 4d6kh3 3 times and then keep the best one of the 3?

Something like this

[[4d6kh3,4d6kh3,4d6kh3]]kh1

Like:

[[{4d6kh3,4d6kh3,4d6kh3}kh1]]

YES!  That is exactly what I wanted.  Thanks Aaron.

I didn't even notice the rolls before. Can you roll my next character, Aaron?