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

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

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