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

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

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