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

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

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