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

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

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