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

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

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