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

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

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