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

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

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