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

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

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