AlexandreTwo Bids

An opening bid at the two-level (2D, 2H, 2S) shows

(a) 7-11 (not-vulnerable) or 9-12 (vulnerable)
(b) either a six card suit or 5+/4 (5 in suit bid plus an unspecified four card suit)
(c) Must have KQ or A in outside outside suit bid

Response: 2NT o rebid own suit (if 6+) or bid the side suit (if 5/4)