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

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

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