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

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

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