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

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

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