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

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

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