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

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

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