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