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

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

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