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

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

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