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

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

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