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

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

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