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

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

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