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

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

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