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

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

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