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

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

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