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

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

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