Previous bidding:
minimum
extra
maximum
5+♦5+♣
~11-15 HCP (2.75-3.75 HT)
(6)7+♦
suit preference
~11-15 HCP (2.75-3.75 HT)
any
any
any
NT preference
NT preference
NT preference
~11-15 HCP (2.75-3.75 HT)
~16-17 HCP (4-4.25 HT)
~18+ HCP (4.5+ HT)
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