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

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

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