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

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

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