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

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

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