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

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

*GRAMMAR*
wif -> YELLOW 
 kiki -> PURPLE 
 fep -> RED 
 gazzer -> BLUE 
 u1 blicket u2 -> [u2] [u1] [u1] 
 u1 tufa -> [u1] [u1] 
 x1 dax -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 