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

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

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