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

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

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