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

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

*GRAMMAR*
dax -> YELLOW 
 gazzer -> GREEN 
 wif -> RED 
 tufa -> BLUE 
 u1 lug -> [u1] [u1] 
 u1 blicket u2 -> [u1] [u2] 
 x1 fep x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 