*SUPPORT*
IN: lug gazzer lug OUT: RED RED RED
IN: kiki fep wif tufa OUT: GREEN YELLOW PURPLE GREEN YELLOW PURPLE
IN: wif kiki OUT: PURPLE GREEN
IN: lug fep gazzer fep tufa OUT: RED YELLOW YELLOW YELLOW RED YELLOW YELLOW YELLOW
IN: wif gazzer lug OUT: RED PURPLE PURPLE
IN: wif OUT: PURPLE
IN: kiki OUT: GREEN
IN: fep OUT: YELLOW
IN: kiki gazzer kiki OUT: GREEN GREEN GREEN
IN: wif gazzer kiki OUT: GREEN PURPLE PURPLE
IN: kiki dax tufa OUT: GREEN GREEN GREEN GREEN
IN: lug dax OUT: RED RED
IN: lug fep gazzer kiki OUT: RED GREEN YELLOW YELLOW
IN: fep gazzer kiki tufa OUT: GREEN YELLOW YELLOW GREEN YELLOW YELLOW

*QUERY*
IN: wif dax OUT: PURPLE PURPLE
IN: kiki dax OUT: GREEN GREEN
IN: fep tufa tufa tufa OUT: YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW YELLOW
IN: wif lug gazzer fep OUT: PURPLE YELLOW RED RED
IN: lug OUT: RED
IN: lug gazzer lug tufa OUT: RED RED RED RED RED RED
IN: fep dax OUT: YELLOW YELLOW
IN: lug kiki OUT: RED GREEN
IN: lug wif dax OUT: RED PURPLE PURPLE
IN: kiki gazzer lug OUT: RED GREEN GREEN

*GRAMMAR*
wif -> PURPLE 
 kiki -> GREEN 
 fep -> YELLOW 
 lug -> RED 
 u1 gazzer u2 -> [u2] [u1] [u1] 
 u1 dax -> [u1] [u1] 
 x1 tufa -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 