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

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

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