1♣ OPENNING
2♣ = 4+♣ GF
2♦ = 4+♣ exactly inv. (balanced )
2♥ = 5+♥ and 4♠ 6-9PC
2NT = forcing
responder bids out shape
3♣ = non force
2♠ = 4+♣ weakest raise or strong splinter
2NT = forcing
3♣ = mixed raise
3♦/♥/♠ = 9-11(12) 0-1♦/♥/♠ ® now 4♣ to play
4♣ = pre.
4♦ = ♣ RKCB
4♥/♠ = to play