*SUPPORT*
IN: zup fep dax OUT: RED PURPLE
IN: lug OUT: GREEN
IN: dax wif zup OUT: PURPLE RED
IN: dax OUT: RED
IN: tufa OUT: YELLOW
IN: tufa wif dax OUT: RED YELLOW
IN: lug fep lug kiki dax wif lug OUT: GREEN GREEN GREEN RED
IN: lug wif lug OUT: GREEN GREEN
IN: tufa fep tufa OUT: YELLOW YELLOW
IN: tufa fep dax kiki zup wif dax OUT: RED YELLOW RED PURPLE
IN: dax fep tufa OUT: YELLOW RED
IN: lug wif dax kiki lug OUT: RED GREEN GREEN
IN: dax fep zup OUT: PURPLE RED
IN: dax zup wif lug kiki tufa OUT: RED GREEN PURPLE YELLOW

*QUERY*
IN: dax kiki tufa zup fep lug OUT: RED YELLOW GREEN PURPLE
IN: zup wif dax OUT: RED PURPLE
IN: zup OUT: PURPLE
IN: tufa fep lug kiki lug wif zup OUT: GREEN YELLOW PURPLE GREEN
IN: dax wif dax OUT: RED RED
IN: zup fep tufa kiki dax OUT: YELLOW PURPLE RED
IN: tufa wif tufa OUT: YELLOW YELLOW
IN: dax tufa wif dax OUT: RED RED YELLOW
IN: tufa dax wif tufa kiki dax OUT: YELLOW YELLOW RED RED
IN: lug lug kiki tufa fep dax OUT: GREEN GREEN RED YELLOW

*GRAMMAR*
zup -> PURPLE 
 tufa -> YELLOW 
 dax -> RED 
 lug -> GREEN 
 x1 kiki x2 -> [x1] [x2] 
 u1 wif u2 -> [u2] [u1] 
 u1 fep u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 