*SUPPORT*
IN: fep tufa fep wif OUT: BLUE BLUE BLUE
IN: lug wif gazzer zup OUT: YELLOW YELLOW PURPLE
IN: dax fep tufa dax fep wif gazzer zup OUT: GREEN BLUE GREEN BLUE BLUE PURPLE
IN: fep wif gazzer zup OUT: BLUE BLUE PURPLE
IN: zup wif OUT: PURPLE PURPLE
IN: dax OUT: GREEN
IN: dax wif OUT: GREEN GREEN
IN: zup gazzer dax OUT: PURPLE GREEN
IN: dax wif gazzer fep OUT: GREEN GREEN BLUE
IN: zup OUT: PURPLE
IN: dax wif gazzer fep gazzer dax OUT: GREEN GREEN BLUE GREEN
IN: fep tufa lug fep wif OUT: BLUE YELLOW BLUE BLUE
IN: fep tufa dax OUT: BLUE GREEN
IN: lug OUT: YELLOW

*QUERY*
IN: fep dax tufa zup OUT: BLUE GREEN PURPLE
IN: fep zup OUT: BLUE PURPLE
IN: fep tufa zup tufa fep wif OUT: BLUE PURPLE BLUE BLUE
IN: zup fep zup wif OUT: PURPLE BLUE PURPLE PURPLE
IN: dax tufa fep gazzer fep OUT: GREEN BLUE BLUE
IN: fep OUT: BLUE
IN: fep wif OUT: BLUE BLUE
IN: lug dax OUT: YELLOW GREEN
IN: lug wif OUT: YELLOW YELLOW
IN: fep zup gazzer zup OUT: BLUE PURPLE PURPLE

*GRAMMAR*
fep -> BLUE 
 lug -> YELLOW 
 zup -> PURPLE 
 dax -> GREEN 
 u1 tufa x1 -> [u1] [x1] 
 x1 gazzer u1 -> [x1] [u1] 
 u1 wif -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 