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

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

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