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

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

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