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

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

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