*SUPPORT*
IN: gazzer lug tufa OUT: GREEN PURPLE
IN: fep lug tufa OUT: BLUE PURPLE
IN: tufa lug fep OUT: PURPLE BLUE
IN: tufa lug kiki OUT: PURPLE YELLOW
IN: fep gazzer lug fep OUT: BLUE GREEN BLUE
IN: tufa lug gazzer OUT: PURPLE GREEN
IN: kiki lug gazzer OUT: YELLOW GREEN
IN: kiki OUT: YELLOW
IN: tufa lug tufa OUT: PURPLE PURPLE
IN: gazzer dax gazzer OUT: GREEN GREEN GREEN GREEN
IN: gazzer OUT: GREEN
IN: kiki lug kiki OUT: YELLOW YELLOW
IN: fep gazzer OUT: BLUE GREEN
IN: fep lug gazzer OUT: BLUE GREEN

*QUERY*
IN: tufa lug gazzer dax gazzer OUT: GREEN PURPLE GREEN PURPLE GREEN PURPLE GREEN
IN: fep blicket OUT: BLUE BLUE BLUE
IN: fep gazzer fep tufa OUT: BLUE GREEN BLUE PURPLE
IN: tufa OUT: PURPLE
IN: gazzer lug fep OUT: GREEN BLUE
IN: fep fep dax gazzer OUT: GREEN BLUE BLUE BLUE BLUE BLUE BLUE
IN: tufa blicket OUT: PURPLE PURPLE PURPLE
IN: fep OUT: BLUE
IN: gazzer lug kiki blicket OUT: GREEN YELLOW GREEN YELLOW GREEN YELLOW
IN: fep lug kiki OUT: BLUE YELLOW

*GRAMMAR*
fep -> BLUE 
 gazzer -> GREEN 
 kiki -> YELLOW 
 tufa -> PURPLE 
 x1 blicket -> [x1] [x1] [x1] 
 u1 lug u2 -> [u1] [u2] 
 x1 dax u1 -> [u1] [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 