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

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

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