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

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

*GRAMMAR*
tufa -> BLUE 
 kiki -> YELLOW 
 fep -> RED 
 wif -> GREEN 
 u1 zup -> [u1] [u1] 
 x1 lug x2 -> [x2] [x1] 
 u1 gazzer u2 -> [u2] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 