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

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

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