Inverted Minor Raises

Playing this, the meanings of 1C (or D)/2C and 1C/3C are reversed. 1C/2C shows 4+ trumps and 10+ points, whereas 1C/3C shows a weak, preemptive hand and 5+ trumps.

             S: x
             H: Kx
             D: xxxx
             C: Kxxxx

             S: Jxxx
             H: Axx
             D: KQx
             C: Axx

W        N       E        S

P        3C      P/O