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

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

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