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

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

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