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

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

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