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

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

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