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

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

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