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

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

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