*SUPPORT*
IN: gazzer tufa OUT: PURPLE GREEN
IN: dax blicket OUT: RED RED
IN: tufa OUT: GREEN
IN: dax tufa lug OUT: RED GREEN GREEN
IN: zup OUT: BLUE
IN: dax lug OUT: RED RED
IN: tufa blicket OUT: GREEN GREEN
IN: zup zup blicket OUT: BLUE BLUE BLUE
IN: tufa lug OUT: GREEN GREEN
IN: gazzer blicket OUT: PURPLE PURPLE
IN: gazzer tufa zup blicket OUT: PURPLE GREEN BLUE BLUE
IN: dax tufa blicket OUT: RED GREEN GREEN
IN: gazzer OUT: PURPLE
IN: gazzer zup OUT: PURPLE BLUE

*QUERY*
IN: gazzer lug wif gazzer tufa lug OUT: PURPLE PURPLE PURPLE GREEN GREEN PURPLE PURPLE
IN: dax OUT: RED
IN: dax gazzer OUT: RED PURPLE
IN: dax gazzer dax OUT: RED PURPLE RED
IN: zup lug OUT: BLUE BLUE
IN: gazzer lug OUT: PURPLE PURPLE
IN: zup zup OUT: BLUE BLUE
IN: dax blicket wif tufa OUT: RED RED GREEN RED RED
IN: zup dax OUT: BLUE RED
IN: zup blicket OUT: BLUE BLUE

*GRAMMAR*
zup -> BLUE 
 dax -> RED 
 gazzer -> PURPLE 
 tufa -> GREEN 
 u1 lug -> [u1] [u1] 
 x1 wif x2 -> [x1] [x2] [x1] 
 u1 blicket -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 