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

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

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