*SUPPORT*
IN: wif dax dax tufa OUT: YELLOW GREEN GREEN YELLOW GREEN GREEN
IN: kiki tufa gazzer kiki wif OUT: RED YELLOW RED YELLOW RED RED RED RED
IN: dax OUT: GREEN
IN: dax tufa OUT: GREEN GREEN
IN: fep kiki gazzer fep wif OUT: PURPLE YELLOW PURPLE YELLOW PURPLE RED PURPLE RED
IN: kiki blicket dax tufa OUT: RED GREEN GREEN
IN: kiki wif blicket kiki OUT: RED YELLOW RED
IN: wif blicket wif OUT: YELLOW YELLOW
IN: dax blicket kiki OUT: GREEN RED
IN: kiki tufa OUT: RED RED
IN: kiki tufa gazzer dax fep OUT: GREEN PURPLE GREEN PURPLE RED RED RED RED
IN: fep blicket wif OUT: PURPLE YELLOW
IN: fep blicket dax OUT: PURPLE GREEN
IN: kiki blicket fep tufa OUT: RED PURPLE PURPLE

*QUERY*
IN: kiki blicket wif tufa OUT: RED YELLOW YELLOW
IN: dax blicket wif dax OUT: GREEN YELLOW GREEN
IN: fep OUT: PURPLE
IN: kiki gazzer wif tufa OUT: YELLOW YELLOW RED RED YELLOW YELLOW RED RED
IN: kiki OUT: RED
IN: fep tufa OUT: PURPLE PURPLE
IN: wif OUT: YELLOW
IN: fep blicket kiki tufa OUT: PURPLE RED RED
IN: dax blicket wif tufa OUT: GREEN YELLOW YELLOW
IN: dax dax OUT: GREEN GREEN

*GRAMMAR*
wif -> YELLOW 
 fep -> PURPLE 
 kiki -> RED 
 dax -> GREEN 
 u1 blicket x1 -> [u1] [x1] 
 x1 tufa -> [x1] [x1] 
 x1 gazzer x2 -> [x2] [x2] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 