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

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

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