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

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

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