*SUPPORT*
IN: lug fep OUT: GREEN GREEN
IN: zup OUT: RED
IN: zup gazzer dax OUT: RED PINK
IN: kiki OUT: YELLOW
IN: zup fep OUT: RED RED
IN: zup tufa lug fep OUT: GREEN GREEN GREEN GREEN RED
IN: kiki tufa kiki fep OUT: YELLOW YELLOW YELLOW YELLOW YELLOW
IN: kiki gazzer kiki OUT: YELLOW YELLOW
IN: zup zup fep OUT: RED RED RED
IN: dax gazzer zup OUT: PINK RED
IN: dax tufa zup OUT: RED RED PINK
IN: dax lug fep OUT: PINK GREEN GREEN
IN: kiki lug gazzer kiki OUT: YELLOW GREEN YELLOW
IN: zup gazzer kiki OUT: RED YELLOW

*QUERY*
IN: kiki dax OUT: YELLOW PINK
IN: kiki fep OUT: YELLOW YELLOW
IN: lug gazzer dax OUT: GREEN PINK
IN: dax OUT: PINK
IN: dax fep OUT: PINK PINK
IN: kiki gazzer dax OUT: YELLOW PINK
IN: lug OUT: GREEN
IN: lug dax OUT: GREEN PINK
IN: lug dax fep OUT: GREEN PINK PINK
IN: dax tufa zup kiki OUT: RED YELLOW RED YELLOW PINK

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