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

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

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