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

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

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