*SUPPORT*
IN: zup kiki zup OUT: GREEN GREEN
IN: zup gazzer fep OUT: GREEN BLUE
IN: zup kiki dax wif dax wif tufa OUT: PURPLE GREEN PURPLE PINK
IN: dax gazzer zup OUT: PURPLE GREEN
IN: tufa zup OUT: PINK GREEN
IN: tufa gazzer tufa OUT: PINK PINK
IN: dax kiki zup OUT: GREEN PURPLE
IN: dax gazzer tufa OUT: PURPLE PINK
IN: fep fep gazzer zup OUT: BLUE BLUE GREEN
IN: tufa kiki dax OUT: PURPLE PINK
IN: fep kiki fep OUT: BLUE BLUE
IN: fep kiki zup OUT: GREEN BLUE
IN: fep kiki tufa OUT: PINK BLUE
IN: dax gazzer dax wif zup OUT: PURPLE PURPLE GREEN

*QUERY*
IN: fep OUT: BLUE
IN: tufa tufa wif dax OUT: PINK PINK PURPLE
IN: tufa zup fep wif fep wif tufa OUT: PINK GREEN BLUE BLUE PINK
IN: fep gazzer fep OUT: BLUE BLUE
IN: zup wif zup OUT: GREEN GREEN
IN: zup kiki tufa OUT: PINK GREEN
IN: zup gazzer dax OUT: GREEN PURPLE
IN: zup gazzer zup OUT: GREEN GREEN
IN: tufa dax kiki dax OUT: PINK PURPLE PURPLE
IN: tufa OUT: PINK

*GRAMMAR*
tufa -> PINK 
 fep -> BLUE 
 zup -> GREEN 
 dax -> PURPLE 
 u1 gazzer u2 -> [u1] [u2] 
 u1 kiki u2 -> [u2] [u1] 
 x1 wif u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 