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

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

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