*SUPPORT*
IN: dax dax fep wif tufa kiki lug OUT: YELLOW RED RED BLUE RED RED BLUE
IN: gazzer kiki gazzer OUT: PURPLE PURPLE
IN: gazzer OUT: PURPLE
IN: lug kiki dax OUT: RED YELLOW
IN: lug lug kiki lug OUT: YELLOW YELLOW YELLOW
IN: wif kiki lug OUT: YELLOW BLUE
IN: wif wif kiki dax kiki dax tufa OUT: RED RED BLUE BLUE RED RED BLUE BLUE
IN: lug dax fep lug kiki lug OUT: YELLOW YELLOW RED YELLOW
IN: gazzer lug kiki gazzer OUT: PURPLE PURPLE YELLOW
IN: dax OUT: RED
IN: gazzer tufa kiki wif OUT: BLUE PURPLE PURPLE
IN: dax lug OUT: RED YELLOW
IN: wif dax kiki wif OUT: BLUE BLUE RED
IN: lug tufa OUT: YELLOW YELLOW

*QUERY*
IN: dax kiki gazzer tufa OUT: PURPLE RED PURPLE RED
IN: dax lug kiki lug tufa OUT: YELLOW RED YELLOW YELLOW RED YELLOW
IN: gazzer wif OUT: PURPLE BLUE
IN: lug OUT: YELLOW
IN: gazzer tufa OUT: PURPLE PURPLE
IN: wif OUT: BLUE
IN: gazzer kiki wif tufa OUT: BLUE PURPLE BLUE PURPLE
IN: wif gazzer OUT: BLUE PURPLE
IN: dax lug dax kiki wif kiki wif OUT: BLUE BLUE RED YELLOW RED
IN: lug tufa kiki gazzer OUT: PURPLE YELLOW YELLOW

*GRAMMAR*
gazzer -> PURPLE 
 dax -> RED 
 wif -> BLUE 
 lug -> YELLOW 
 x1 tufa -> [x1] [x1] 
 x1 kiki u1 -> [u1] [x1] 
 x1 fep x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 