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

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

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