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

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

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