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

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

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