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

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

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