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

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

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