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

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

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