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

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

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