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

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

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