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

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

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