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

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

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