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

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

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