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

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

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