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

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

*GRAMMAR*
tufa -> GREEN 
 dax -> YELLOW 
 wif -> BLUE 
 fep -> PURPLE 
 x1 gazzer x2 -> [x2] [x2] [x1] 
 x1 kiki -> [x1] [x1] 
 u1 lug u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 