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

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

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