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

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

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