RKCB

4NT, asking about Aces and the King of trumps

Without a usefull void, our answer is 1430. After 4NT - 5m - 5M, RE with 3 or 4 KC bids 6M automatically.

With a usefull void: 

5NT         =    2 KC + void

6 in a side suit    =    odd number of KC and void in the suit bid

6 in a trump    =     odd number of KC and void in the higher suit