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

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

*GRAMMAR*
tufa -> RED 
 fep -> GREEN 
 wif -> BLUE 
 zup -> YELLOW 
 u1 gazzer u2 -> [u2] [u1] 
 x1 blicket u1 -> [u1] [x1] 
 x1 dax -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 