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

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

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