*SUPPORT*
IN: dax gazzer wif OUT: YELLOW PINK YELLOW
IN: dax tufa wif OUT: PINK YELLOW
IN: wif OUT: YELLOW
IN: zup tufa dax OUT: BLUE PINK
IN: wif gazzer kiki OUT: GREEN YELLOW GREEN
IN: kiki OUT: GREEN
IN: kiki tufa wif OUT: GREEN YELLOW
IN: wif gazzer dax OUT: PINK YELLOW PINK
IN: dax OUT: PINK
IN: zup blicket OUT: BLUE BLUE
IN: kiki blicket OUT: GREEN GREEN
IN: wif gazzer wif OUT: YELLOW YELLOW YELLOW
IN: kiki gazzer dax OUT: PINK GREEN PINK
IN: zup gazzer dax OUT: PINK BLUE PINK

*QUERY*
IN: dax tufa kiki OUT: PINK GREEN
IN: kiki dax dax tufa dax OUT: GREEN PINK PINK PINK
IN: zup gazzer zup OUT: BLUE BLUE BLUE
IN: dax blicket OUT: PINK PINK
IN: kiki gazzer kiki OUT: GREEN GREEN GREEN
IN: dax wif gazzer dax OUT: PINK PINK YELLOW PINK
IN: wif tufa wif OUT: YELLOW YELLOW
IN: kiki zup blicket OUT: GREEN BLUE BLUE
IN: wif gazzer zup OUT: BLUE YELLOW BLUE
IN: kiki tufa dax OUT: GREEN PINK

*GRAMMAR*
zup -> BLUE 
 wif -> YELLOW 
 dax -> PINK 
 kiki -> GREEN 
 u1 blicket -> [u1] [u1] 
 u1 tufa u2 -> [u1] [u2] 
 u1 gazzer u2 -> [u2] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 