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

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

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