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

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

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