*SUPPORT*
IN: lug fep dax kiki tufa kiki OUT: GREEN GREEN PINK YELLOW
IN: kiki lug OUT: GREEN PINK
IN: zup gazzer kiki tufa fep OUT: GREEN YELLOW BLUE BLUE
IN: kiki tufa fep OUT: GREEN YELLOW
IN: fep lug tufa kiki OUT: YELLOW PINK GREEN
IN: fep kiki tufa zup gazzer kiki tufa lug OUT: GREEN PINK YELLOW GREEN BLUE YELLOW GREEN BLUE
IN: fep tufa kiki OUT: YELLOW GREEN
IN: kiki lug tufa kiki OUT: GREEN PINK GREEN
IN: kiki gazzer zup tufa lug OUT: BLUE PINK GREEN GREEN
IN: kiki tufa zup OUT: GREEN BLUE
IN: zup OUT: BLUE
IN: kiki dax kiki tufa lug OUT: GREEN PINK GREEN
IN: lug fep tufa fep OUT: PINK YELLOW YELLOW
IN: fep zup dax kiki tufa kiki OUT: GREEN GREEN YELLOW BLUE

*QUERY*
IN: zup fep kiki OUT: BLUE YELLOW GREEN
IN: zup lug OUT: BLUE PINK
IN: lug OUT: PINK
IN: kiki tufa lug OUT: GREEN PINK
IN: lug lug OUT: PINK PINK
IN: kiki OUT: GREEN
IN: fep tufa fep OUT: YELLOW YELLOW
IN: fep OUT: YELLOW
IN: fep zup zup dax zup kiki dax zup OUT: BLUE BLUE GREEN YELLOW BLUE BLUE
IN: kiki tufa lug dax zup kiki OUT: BLUE GREEN GREEN PINK

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