*SUPPORT*
IN: fep zup fep OUT: PURPLE PURPLE PURPLE
IN: tufa zup wif OUT: YELLOW YELLOW BLUE
IN: fep kiki fep zup lug OUT: RED RED PURPLE PURPLE
IN: fep gazzer OUT: PURPLE PURPLE PURPLE PURPLE PURPLE
IN: fep kiki lug fep gazzer OUT: RED PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE
IN: fep kiki lug kiki fep fep tufa OUT: PURPLE PURPLE BLUE RED PURPLE
IN: tufa zup lug OUT: RED RED BLUE
IN: tufa lug kiki fep gazzer OUT: BLUE PURPLE PURPLE PURPLE PURPLE PURPLE RED
IN: fep OUT: PURPLE
IN: lug kiki fep zup wif OUT: YELLOW YELLOW PURPLE RED
IN: tufa lug zup tufa OUT: BLUE BLUE BLUE RED
IN: tufa fep OUT: BLUE PURPLE
IN: wif OUT: YELLOW
IN: lug OUT: RED

*QUERY*
IN: lug wif gazzer OUT: RED YELLOW YELLOW YELLOW YELLOW YELLOW
IN: wif lug gazzer OUT: YELLOW RED RED RED RED RED
IN: lug wif OUT: RED YELLOW
IN: lug tufa kiki lug lug tufa lug OUT: RED RED RED BLUE RED BLUE
IN: lug gazzer OUT: RED RED RED RED RED
IN: lug zup fep OUT: PURPLE PURPLE RED
IN: wif gazzer OUT: YELLOW YELLOW YELLOW YELLOW YELLOW
IN: lug kiki wif zup tufa OUT: BLUE BLUE YELLOW RED
IN: lug kiki wif gazzer OUT: YELLOW YELLOW YELLOW YELLOW YELLOW RED
IN: wif zup wif OUT: YELLOW YELLOW YELLOW

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