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

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

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