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

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

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