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

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

*GRAMMAR*
kiki -> RED 
 tufa -> YELLOW 
 wif -> BLUE 
 fep -> GREEN 
 x1 lug x2 -> [x2] [x1] [x1] [x1] [x1] [x2] [x1] [x2] 
 x1 zup u1 -> [u1] [x1] 
 u1 gazzer -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 