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

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

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