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

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

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