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

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

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