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

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

*GRAMMAR*
fep -> YELLOW 
 dax -> PINK 
 zup -> BLUE 
 kiki -> GREEN 
 u1 wif x1 -> [u1] [x1] 
 x1 blicket x2 -> [x1] [x2] 
 u1 lug u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 