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

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

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