1 NT Opening and its anwers

The auction so far

1 nt	15-17 HCP 5 kaart hoog en 6 kaart laag mag	2	8+ HCP Stayman (vragen naar bezit in de hoge kleuren)
2	Geen 4 kaart hoog	2 nt	8 HCP (of een slechte 9) invite voor 3sans
???

1 nt Printversion

No answers are found / defined. If the basic distribution is known you can ask for exact distribution with Symmetric relay principles. After that the next relay asks for Keycards and the relay after that for the exact controls in specific suit