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

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

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