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

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

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