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

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

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