*SUPPORT*
IN: gazzer lug OUT: RED PINK
IN: zup OUT: BLUE
IN: lug zup tufa OUT: PINK BLUE PINK BLUE
IN: lug zup tufa dax zup OUT: PINK BLUE PINK BLUE BLUE BLUE
IN: wif fep lug OUT: YELLOW PINK PINK
IN: zup fep zup lug OUT: BLUE BLUE PINK BLUE PINK
IN: lug lug fep zup fep zup OUT: PINK PINK BLUE BLUE BLUE BLUE
IN: lug gazzer gazzer tufa OUT: PINK RED RED PINK RED RED
IN: wif tufa OUT: YELLOW YELLOW
IN: gazzer tufa tufa OUT: RED RED RED RED
IN: gazzer dax gazzer dax wif OUT: RED RED RED YELLOW YELLOW
IN: gazzer zup tufa OUT: RED BLUE RED BLUE
IN: zup zup dax zup OUT: BLUE BLUE BLUE BLUE
IN: gazzer tufa OUT: RED RED

*QUERY*
IN: wif lug dax wif OUT: YELLOW PINK YELLOW YELLOW
IN: lug fep lug tufa OUT: PINK PINK PINK PINK PINK
IN: zup fep gazzer fep wif tufa OUT: BLUE RED RED YELLOW YELLOW YELLOW YELLOW
IN: lug tufa OUT: PINK PINK
IN: gazzer OUT: RED
IN: lug dax gazzer OUT: PINK RED RED
IN: lug OUT: PINK
IN: zup wif OUT: BLUE YELLOW
IN: zup tufa OUT: BLUE BLUE
IN: wif OUT: YELLOW

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