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

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

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