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

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

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