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

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

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