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

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

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