1♣* - 1♥* 16+; 8+ with 5+♠
1♠* - 2♦* showing support and asking controls; 4 controls (A=2, K=1)
But we might be a level higher.
What next?
I have devised the following scheme that seems better than the traditional suit asks.
Relay to ask about a side suit or trumps. Responses are [steps]:
[4] Doubleton
[5] Singleton
[6] Void
[3] K or AQ
[4] A or KQ
[5] AKQ
The responses to a trump ask are the same, except first step shows possible extra length instead of shortness, then [2] relay ..... [3] None, [4] Q or AK, [5] K or AQ etc
What else is there that people are using?