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

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

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