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

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

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