( ( hcp(north)>6 and hcp(north)<15 
    and 
    ( hcp(south)>10 and hcp(south)<14
      or
      hcp(south)>18 and hcp(south)<21
    ) 
  ) 
or
  ( hcp(south)>6 and hcp(south)<15 
    and 
    ( hcp(north)>10 and hcp(north)<14
      or
      hcp(north)>18 and hcp(north)<21
    )
  ) 
)
and
(spades(south)>=0
 and spades(south)<4
 and hearts(south)>=0
 and hearts(south)<4
 and diamonds(south)>=0
 and diamonds(south)<12
 and clubs(south)>=0
 and clubs(south)<12)  
 and
(spades(north)>=0
 and spades(north)<4
 and hearts(north)>=0
 and hearts(north)<4
 and diamonds(north)>=0
 and diamonds(north)<12
 and clubs(north)>=0
 and clubs(north)<12
)
and
( hcp(east)<13 and hcp(west)<13  )