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

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

*GRAMMAR*
kiki -> PURPLE 
 wif -> RED 
 gazzer -> BLUE 
 dax -> YELLOW 
 x1 fep x2 -> [x1] [x2] 
 x1 lug -> [x1] [x1] [x1] 
 u1 zup u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 