After showing 18~19 Balance
First Round Response
1m-1♠; 2N-??
3♣
ask major
3♦
fit minor
3♥
5♠+5♥
3♠
6+♠
Other sequence
1m-1♠; 2N-3♣
3♦
3♠+4♥
3♥
4♥
3♠
3♠
3N
neither
1♣-1♦; 2N-??