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

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

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