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

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

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