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

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

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