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

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

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