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

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

*GRAMMAR*
wif -> PURPLE 
 tufa -> YELLOW 
 kiki -> GREEN 
 fep -> BLUE 
 x1 lug -> [x1] [x1] 
 x1 dax x2 -> [x2] [x1] 
 u1 zup u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 