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

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

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