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

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

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