*SUPPORT*
IN: zup wif gazzer wif OUT: PINK BLUE BLUE
IN: lug zup OUT: GREEN PINK
IN: zup dax zup kiki OUT: PINK PINK PINK PINK PINK PINK
IN: lug zup gazzer wif dax wif OUT: BLUE GREEN BLUE PINK BLUE
IN: wif kiki kiki dax fep OUT: RED BLUE BLUE BLUE BLUE RED
IN: zup zup lug wif gazzer wif OUT: PINK PINK GREEN BLUE BLUE
IN: zup gazzer wif OUT: BLUE PINK
IN: lug gazzer wif OUT: BLUE GREEN
IN: lug fep dax lug OUT: GREEN GREEN RED GREEN
IN: lug OUT: GREEN
IN: lug lug gazzer zup OUT: GREEN PINK GREEN
IN: zup gazzer lug dax lug OUT: GREEN GREEN PINK GREEN
IN: lug wif gazzer fep kiki OUT: GREEN RED BLUE GREEN RED BLUE
IN: wif gazzer zup kiki OUT: PINK BLUE PINK BLUE

*QUERY*
IN: wif gazzer fep OUT: RED BLUE
IN: zup OUT: PINK
IN: wif gazzer fep dax fep dax zup OUT: PINK RED RED BLUE RED PINK
IN: fep kiki kiki OUT: RED RED RED RED
IN: fep OUT: RED
IN: lug gazzer zup OUT: PINK GREEN
IN: lug wif kiki kiki OUT: GREEN BLUE GREEN BLUE GREEN BLUE GREEN BLUE
IN: wif OUT: BLUE
IN: wif gazzer zup OUT: PINK BLUE
IN: zup gazzer lug OUT: GREEN PINK

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