*SUPPORT*
IN: tufa lug fep OUT: YELLOW BLUE
IN: gazzer tufa lug gazzer OUT: PURPLE PURPLE BLUE
IN: tufa fep lug fep wif tufa OUT: BLUE BLUE YELLOW YELLOW BLUE
IN: tufa lug dax wif gazzer OUT: PURPLE RED BLUE PURPLE
IN: tufa lug dax OUT: RED BLUE
IN: gazzer lug dax OUT: RED PURPLE
IN: dax lug gazzer OUT: PURPLE RED
IN: dax lug tufa OUT: BLUE RED
IN: dax gazzer dax wif dax wif dax OUT: RED RED RED PURPLE RED RED RED
IN: fep gazzer wif tufa OUT: BLUE YELLOW PURPLE BLUE
IN: fep lug fep OUT: YELLOW YELLOW
IN: fep dax zup dax dax lug dax OUT: RED RED RED YELLOW RED
IN: fep OUT: YELLOW
IN: dax fep dax lug fep OUT: RED YELLOW YELLOW RED

*QUERY*
IN: tufa OUT: BLUE
IN: gazzer OUT: PURPLE
IN: tufa gazzer gazzer fep OUT: BLUE PURPLE PURPLE YELLOW
IN: dax OUT: RED
IN: fep lug tufa OUT: BLUE YELLOW
IN: gazzer lug gazzer OUT: PURPLE PURPLE
IN: dax lug gazzer wif dax OUT: RED PURPLE RED RED
IN: gazzer lug fep OUT: YELLOW PURPLE
IN: tufa dax zup fep OUT: YELLOW BLUE RED
IN: tufa tufa OUT: BLUE BLUE

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