◇ 1H-1S; 1N

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1H  1S
1N  2C!         puppet 2D   (weak, BAL inv, or 5S + 4+m inv)
    2D!         relay, FG, often 5+S
    2H          4S3H, inv
    2S          5+S, inv    (若只有爛的2張配合要叫2N)
    2N!         puppet 3C   (weak, or 3 suits FG)
    3m          4S5m inv
    3H          4S3H, FG
    3S          6+S, >AQJxxx, FG
    跳叫二級新花6+S, x spl, ST
    3N/4M       S/O

1H  1S
1N  2C!
2D          nothing
2H!         Max, 3S

1H  1S
1N  2C!
2D  ps      S/O
    2H      S/O
    2S      S/O
    2N      inv

1H  1S
1N  2D!
2H          min, 2533
2S          3S
2N          Max, 2533

1H  1S
1N  2N!
3C  ps      S/O
    3D!     3 suits, C spl
    3H!     3 suits, D spl
    3S!     3 suits, H spl, 5S
    3N!     3 suits, H spl, 4S