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

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

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