Good day! Please open fr.nat and bid this System. Msk vist.
Negative dbl to 3 spade. Dbl and redbl 3-card fit in majors.
After 1nt - partners dbl-penalty. After 2 suit open bids- dbl - to my second suit. Also after 2 diamond - dbl for my suit.
After 3 levels blocks- dbl for penalty, new suit-forsing- with fit 4 level bid, or 3nt, if you haven't bid.
If opponents bid 1h(s)- our 2h(s) 7-11 or 16+ with 2 suiter s(h) with minor.