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

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

*GRAMMAR*
fep -> GREEN 
 kiki -> RED 
 zup -> YELLOW 
 dax -> BLUE 
 u1 gazzer u2 -> [u2] [u1] [u2] [u1] 
 u1 lug -> [u1] [u1] [u1] [u1] 
 u1 wif -> [u1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 