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

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

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