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

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

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