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

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

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