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

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

*GRAMMAR*
zup -> BLUE 
 dax -> RED 
 fep -> PURPLE 
 wif -> YELLOW 
 x1 lug x2 -> [x2] [x1] 
 u1 tufa u2 -> [u2] [u1] [u1] [u1] 
 x1 kiki u1 -> [u1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 