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

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

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