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

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

*GRAMMAR*
fep -> YELLOW 
 zup -> GREEN 
 tufa -> RED 
 dax -> PINK 
 u1 wif u2 -> [u2] [u1] 
 u1 gazzer -> [u1] [u1] 
 x1 kiki x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 