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

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

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