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

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

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