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

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

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