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

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

*GRAMMAR*
wif -> YELLOW 
 gazzer -> PINK 
 kiki -> RED 
 dax -> GREEN 
 x1 tufa x2 -> [x2] [x1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 fep u2 -> [u1] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 