1§-2§ = inverted

1§- 2¨ = mixed raise

1§- 2© = 4-5 majors non force

1§ - 2ª ?

1§ - 2NT = Game force

1§ - 3§ = preemptive

1§ - 3¨, 3©, 3ª = preemptive

1§ - 3NT = ?

1§ - 4§ =?