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

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

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