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

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

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