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

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

*GRAMMAR*
tufa -> BLUE 
 fep -> RED 
 zup -> GREEN 
 dax -> PURPLE 
 u1 kiki -> [u1] [u1] [u1] 
 x1 blicket x2 -> [x2] [x1] [x2] 
 u1 wif u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 