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

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

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