*SUPPORT*
IN: dax blicket dax OUT: PURPLE PURPLE
IN: tufa OUT: RED
IN: dax lug OUT: PURPLE PURPLE PURPLE
IN: kiki OUT: YELLOW
IN: tufa blicket dax OUT: PURPLE RED
IN: kiki tufa kiki lug OUT: YELLOW RED YELLOW YELLOW YELLOW
IN: gazzer blicket gazzer OUT: GREEN GREEN
IN: kiki kiki blicket kiki OUT: YELLOW YELLOW YELLOW
IN: gazzer tufa OUT: GREEN RED
IN: tufa lug OUT: RED RED RED
IN: kiki blicket dax OUT: PURPLE YELLOW
IN: gazzer tufa blicket tufa wif tufa lug OUT: RED RED RED GREEN RED RED
IN: dax blicket kiki OUT: YELLOW PURPLE
IN: dax blicket gazzer OUT: GREEN PURPLE

*QUERY*
IN: kiki wif dax lug wif dax lug OUT: PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE YELLOW
IN: gazzer blicket dax OUT: PURPLE GREEN
IN: gazzer kiki blicket dax OUT: GREEN PURPLE YELLOW
IN: kiki lug wif dax dax gazzer blicket gazzer OUT: PURPLE PURPLE GREEN GREEN YELLOW YELLOW YELLOW
IN: kiki blicket kiki OUT: YELLOW YELLOW
IN: gazzer tufa blicket tufa OUT: GREEN RED RED
IN: gazzer blicket tufa OUT: RED GREEN
IN: dax gazzer OUT: PURPLE GREEN
IN: gazzer lug OUT: GREEN GREEN GREEN
IN: gazzer OUT: GREEN

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