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

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

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