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

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

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