*SUPPORT*
IN: lug zup OUT: GREEN GREEN
IN: blicket dax zup OUT: RED YELLOW YELLOW
IN: blicket lug zup OUT: RED GREEN GREEN
IN: blicket gazzer lug OUT: GREEN RED
IN: tufa lug OUT: BLUE GREEN
IN: dax OUT: YELLOW
IN: lug gazzer blicket OUT: RED GREEN
IN: lug gazzer dax OUT: YELLOW GREEN
IN: dax tufa wif OUT: YELLOW BLUE YELLOW BLUE YELLOW BLUE
IN: lug gazzer blicket wif OUT: RED GREEN RED GREEN RED GREEN
IN: blicket lug gazzer dax OUT: RED YELLOW GREEN
IN: dax gazzer tufa OUT: BLUE YELLOW
IN: dax zup OUT: YELLOW YELLOW
IN: dax gazzer blicket wif OUT: RED YELLOW RED YELLOW RED YELLOW

*QUERY*
IN: lug gazzer lug OUT: GREEN GREEN
IN: tufa OUT: BLUE
IN: dax gazzer blicket OUT: RED YELLOW
IN: dax blicket zup OUT: YELLOW RED RED
IN: tufa zup OUT: BLUE BLUE
IN: blicket zup OUT: RED RED
IN: blicket blicket zup OUT: RED RED RED
IN: lug OUT: GREEN
IN: lug wif OUT: GREEN GREEN GREEN
IN: blicket OUT: RED

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