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

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

*GRAMMAR*
tufa -> GREEN 
 dax -> RED 
 fep -> YELLOW 
 kiki -> PINK 
 x1 gazzer x2 -> [x1] [x2] [x1] [x2] 
 x1 zup -> [x1] [x1] [x1] 
 x1 wif x2 -> [x2] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 