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

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

*GRAMMAR*
tufa -> YELLOW 
 lug -> PINK 
 dax -> BLUE 
 wif -> RED 
 u1 gazzer x1 -> [u1] [x1] 
 u1 kiki u2 -> [u2] [u1] 
 x1 zup x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 