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

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

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