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

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

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