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

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

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