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

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

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