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

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

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