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

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

*GRAMMAR*
wif -> BLUE 
 lug -> RED 
 fep -> GREEN 
 kiki -> PINK 
 x1 blicket x2 -> [x2] [x1] [x1] 
 x1 dax x2 -> [x2] [x2] [x1] 
 x1 gazzer u1 -> [u1] [x1] [x1] [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 