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

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

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