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

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

*GRAMMAR*
fep -> RED 
 lug -> BLUE 
 tufa -> GREEN 
 wif -> PINK 
 u1 dax -> [u1] [u1] [u1] 
 u1 zup u2 -> [u2] [u1] [u2] 
 u1 gazzer -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 