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

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

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