*SUPPORT*
IN: gazzer tufa kiki wif gazzer OUT: RED PINK BLUE RED PINK BLUE RED
IN: fep kiki tufa zup fep OUT: GREEN BLUE PINK GREEN
IN: fep zup gazzer OUT: GREEN RED
IN: kiki zup kiki OUT: BLUE BLUE
IN: tufa kiki zup tufa wif fep OUT: PINK BLUE PINK PINK BLUE PINK GREEN
IN: gazzer kiki zup fep OUT: RED BLUE GREEN
IN: gazzer fep gazzer wif kiki OUT: RED GREEN RED RED GREEN RED BLUE
IN: gazzer tufa fep wif fep OUT: RED PINK GREEN RED PINK GREEN GREEN
IN: kiki wif fep OUT: BLUE BLUE GREEN
IN: gazzer zup kiki wif fep lug fep OUT: GREEN RED BLUE RED BLUE GREEN
IN: tufa wif fep OUT: PINK PINK GREEN
IN: tufa tufa zup kiki wif fep OUT: PINK PINK BLUE PINK PINK BLUE GREEN
IN: gazzer OUT: RED
IN: kiki kiki zup fep wif tufa OUT: BLUE BLUE GREEN BLUE BLUE GREEN PINK

*QUERY*
IN: fep kiki OUT: GREEN BLUE
IN: tufa zup kiki OUT: PINK BLUE
IN: fep fep zup fep OUT: GREEN GREEN GREEN
IN: tufa tufa zup fep lug tufa wif tufa OUT: PINK PINK PINK PINK PINK GREEN
IN: gazzer zup gazzer OUT: RED RED
IN: tufa gazzer wif gazzer OUT: PINK RED PINK RED RED
IN: fep gazzer zup fep wif gazzer OUT: GREEN RED GREEN GREEN RED GREEN RED
IN: tufa kiki fep OUT: PINK BLUE GREEN
IN: fep OUT: GREEN
IN: gazzer zup fep OUT: RED GREEN

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