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

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

*GRAMMAR*
wif -> RED 
 kiki -> BLUE 
 fep -> YELLOW 
 dax -> GREEN 
 x1 blicket x2 -> [x2] [x1] 
 x1 gazzer u1 -> [x1] [u1] 
 x1 lug x2 -> [x1] [x2] [x2] 
 u1 x1 -> [u1] [x1] 
 