You are SOUTH, what is the meaning of your last bid? 

1  NORTH        EAST        SOUTH        WEST
    1H           4S          4NT   
  


2  NORTH        EAST        SOUTH        WEST
    1S           4H          4NT  

   
3  NORTH        EAST        SOUTH        WEST
    1D           2D*         DBL
                             2H
                             2S
                             2NT
                             3C
  *S+CL or S+H
                      
                            
4  NORTH        EAST        SOUTH        WEST
    1H           2H*         DBL
                             2S
                             3C(D)
                             4C(D)
*S+minor
  

5  NORTH        EAST        SOUTH        WEST
    1S           2S*         DBL
                             2NT
                             3C(D)  
                             3H
                             4C(D)
*H+minor
 
 
6  NORTH        EAST        SOUTH        WEST
    1H           2NT         DBL
                             3C(D)
                             3H
                             3S
                             3NT
*minor
     
      
7  NORTH        EAST        SOUTH        WEST
    1C           2D*         2H(S)
                             2NT
                             DBL
*weak diamonds
*weak major

     
8  NORTH        EAST        SOUTH        WEST
    -            -           1H           P
     1S           2CL        DBL
                             2NT
                             3CL

     
9  NORTH        EAST        SOUTH        WEST       
     -            -          1C           P
    1H           1S          DBL
                             2S
                             2NT
  

10 NORTH        EAST        SOUTH        WEST
     -            -          1C           P       
    1H           1S          4C