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

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

*GRAMMAR*
wif -> GREEN 
 lug -> RED 
 dax -> BLUE 
 gazzer -> PURPLE 
 u1 tufa u2 -> [u1] [u2] 
 x1 zup -> [x1] [x1] 
 x1 blicket u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 