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

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

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