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

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

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