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

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

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