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

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

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