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

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

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