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

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

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