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

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

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