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

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

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