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

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

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