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

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

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