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

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

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