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

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

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