*SUPPORT*
IN: fep gazzer fep OUT: RED RED
IN: fep OUT: RED
IN: zup fep tufa OUT: BLUE RED BLUE RED
IN: fep gazzer lug OUT: GREEN RED
IN: lug gazzer zup OUT: BLUE GREEN
IN: lug tufa OUT: GREEN GREEN
IN: zup gazzer zup tufa tufa OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: wif OUT: PURPLE
IN: zup gazzer wif OUT: PURPLE BLUE
IN: fep fep gazzer zup tufa blicket lug OUT: GREEN RED BLUE RED RED BLUE RED
IN: wif gazzer lug OUT: GREEN PURPLE
IN: zup OUT: BLUE
IN: zup fep gazzer lug tufa OUT: BLUE GREEN RED BLUE GREEN RED
IN: fep fep fep tufa OUT: RED RED RED RED RED RED

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

*GRAMMAR*
fep -> RED 
 lug -> GREEN 
 wif -> PURPLE 
 zup -> BLUE 
 u1 gazzer u2 -> [u2] [u1] 
 x1 tufa -> [x1] [x1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 