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

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

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