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

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

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