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

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

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