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

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

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