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

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

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