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

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

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