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

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

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