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

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

*GRAMMAR*
fep -> PURPLE 
 lug -> BLUE 
 wif -> GREEN 
 dax -> RED 
 u1 kiki u2 -> [u1] [u2] 
 x1 zup u1 -> [x1] [x1] [u1] 
 u1 tufa -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 