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

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

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