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

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

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