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

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

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