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

*QUERY*
IN: tufa tufa lug OUT: PINK PINK PINK
IN: tufa gazzer OUT: PINK PINK
IN: tufa fep gazzer OUT: PINK YELLOW YELLOW
IN: kiki zup tufa kiki gazzer OUT: PINK GREEN GREEN GREEN
IN: kiki dax zup fep gazzer OUT: GREEN YELLOW YELLOW BLUE
IN: dax gazzer OUT: BLUE BLUE
IN: kiki OUT: GREEN
IN: dax lug OUT: BLUE BLUE
IN: tufa zup tufa OUT: PINK PINK
IN: kiki gazzer OUT: GREEN GREEN

*GRAMMAR*
fep -> YELLOW 
 tufa -> PINK 
 kiki -> GREEN 
 dax -> BLUE 
 u1 lug -> [u1] [u1] 
 u1 zup x1 -> [x1] [u1] 
 u1 gazzer -> [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 