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

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

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