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

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

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