*SUPPORT*
IN: dax OUT: GREEN
IN: tufa wif OUT: YELLOW YELLOW YELLOW
IN: zup dax OUT: RED GREEN
IN: tufa tufa OUT: YELLOW YELLOW
IN: kiki tufa wif OUT: BLUE YELLOW YELLOW YELLOW
IN: tufa lug tufa OUT: YELLOW YELLOW YELLOW
IN: kiki lug dax OUT: GREEN BLUE GREEN
IN: zup lug tufa OUT: YELLOW RED YELLOW
IN: zup OUT: RED
IN: tufa lug kiki OUT: BLUE YELLOW BLUE
IN: tufa dax wif OUT: YELLOW GREEN GREEN GREEN
IN: kiki blicket OUT: BLUE BLUE
IN: tufa OUT: YELLOW
IN: kiki lug kiki OUT: BLUE BLUE BLUE

*QUERY*
IN: tufa lug dax OUT: GREEN YELLOW GREEN
IN: tufa blicket OUT: YELLOW YELLOW
IN: kiki OUT: BLUE
IN: dax lug tufa OUT: YELLOW GREEN YELLOW
IN: dax dax wif OUT: GREEN GREEN GREEN GREEN
IN: kiki wif OUT: BLUE BLUE BLUE
IN: dax lug zup OUT: RED GREEN RED
IN: zup blicket OUT: RED RED
IN: zup lug zup OUT: RED RED RED
IN: zup lug dax OUT: GREEN RED GREEN

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