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

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

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