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

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

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