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

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

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