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

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

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