?

- 3¨               : singleton diamond and three cards support, with solid suit, (3-3-1-6)

- 3NT              : singleton heart and stoppers, with solid suit                                                                 

- 3ª                : singleton spade, four cards support with good suit, (1-4-3-5)

- 4§                : four cards support with good suit, (2-4-2-5)

- 4¨               : singleton diamond, four cards support with good suit, (3-4-1-5)

1¨   -             1©

 ?

- 3NT              :singleton heart and stoppers, with solid suit                                                                  

- 3ª                :singleton spade, four cards support with good suit, (1-4-5-3)

- 4§                :singleton club, four cards support with good suit, (3-4-5-1)

- 4¨               :four cards support with good suit, (2-4-5-2)

1¨   -             1ª

 ?

- 3©                :singleton heart and three cards support, with good suit, (3-1-6-3)

- 3NT              :singleton spade and stoppers, with good suit                                                                                      

- 4§                :singleton club and four cards support, (4-4-4-1), (4-3-5-1)

- 4¨               :four cards support with good suit, (4-2-5-2),

- 4©                :singleton heart and four cards support, (4-1-5-3), (4-1-4-4)

1§    -             1ª

 ?

- 3¨               :singleton diamond and three cards support, with good suit, (3-3-1-6)

- 3©                :singleton heart and three cards support, with good suit, (3-1-3-6)

- 3NT              :singleton spade and stoppers, with good suit                                                                                      

- 4§                :four cards support with good suit, (4-2-2-5),

- 4¨               :singleton diamond and four cards support, (4-3-1-5), (4-4-1-4)

- 4©                :singleton heart and four cards support, (4-1-3-5)