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

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

*GRAMMAR*
dax -> BLUE 
 kiki -> RED 
 zup -> PURPLE 
 fep -> GREEN 
 u1 lug u2 -> [u2] [u2] [u1] 
 x1 gazzer x2 -> [x2] [x1] 
 u1 wif u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 