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

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

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