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

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

*GRAMMAR*
kiki -> RED 
 tufa -> GREEN 
 gazzer -> BLUE 
 lug -> YELLOW 
 u1 dax u2 -> [u1] [u2] 
 u1 wif u2 -> [u2] [u1] 
 x1 fep x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 